|  | CHAPTER XVII
        
        .       THE CAREER OF NUR-AD-DIN
          
         
          
         Nur-ad-Din Mahmud succeeded his father Zengi at Aleppo in mid-September of 1146, he was a young
          and hitherto, apparently, inexperienced man, who was now faced with the task of
          establishing himself. He was surrounded by actual or potential enemies and
          rivals, and there were jealousies between his emirs. The division of Zengi’s principality seemed to dissipate at one stroke all
          the gains made in the past twenty years, except for the capture of Edessa. Unur at Damascus had lost no time in compelling Zengi’s governor, Najm-ad-Din Aiyub,
          to surrender Baalbek, in detaching Homs from Aleppo, and even in gaining over
          al-Yaghisiyani at Hamah. After the repulse by Shirkuh, who had also accompanied Nur-ad-Din to Aleppo, of
          a raid by Raymond, a more serious threat presented itself in Joscelin’s attempt to recapture Edessa. In this crisis,
          Nur-ad-Din showed for the first time what he was made of; he raced to its
          defense, not only to counter the crusaders, but also to forestall his brother
          Saif-ad-Din of Mosul, and prevented any future attempts of the kind by
          destroying its Armenian and Jacobite population.
  
 This striking success over the Franks had in all
          probability a considerable effect in consolidating Nur-ad-Din’s position. For
          he had still to reach a direct settlement with his brother at Mosul, whose
          liberty of action was hampered for the time being by the rising of the Artukid princes Timurtash and Alp
          Arslan, and their recovery of their former possessions in the north. That there
          were some tensions between Aleppo and Mosul seems to be indicated by a number
          of small details, such as Nur-ad-Din’s refortification of Qalat Najm, guarding the bridge over the Euphrates on the Harran-Aleppo road; and it
          would appear that one of the main stabilizing factors in the situation was the
          friendship between the Mosul vizier Jamal-ad-Din and the Kurdish emir Shirkuh, who made it their aim to maintain the two
          principalities separate but in close alliance. Whether, as Ibn-al-Athir asserts, the two brothers, with many precautions, met
          outside Aleppo and came to a friendly agreement, or not, it is clear that
          Saif-ad-Din accepted the situation. Nur-ad-Din had, in fact, gained the support
          not only of the regular regiments of Aleppo but also of the Yuruk Turkoman
          tribes who had recently migrated into northern Syria, and was already able at
          the time of the attack on Edessa to put an army of 10,000 horsemen in the
          field. So powerful a force not only guaranteed his independence against his
          brother, though it would appear that Saif-ad-Din was regarded formally as
          Nur-ad-Din’s suzerain during his lifetime, but also convinced Unur of the advantages of a reconciliation with him. In the
          following March the two Syrian princes were united by Nur-ad-Din’s marriage
          with Unur’s daughter; al-Yaghisiyani at Hamah returned to his former allegiance; and the alliance was signalized by
          joint operations in May against the Franks in the Hauran,
          where a rebel governor, Altintash, had sought
          assistance from Jerusalem.
  
 Back in the north, Nur-ad-Din prepared to defend
          himself against a more powerful rival. The Selchukid sultan of Rum (central Anatolia), Masud (1116-1155),
          now at peace with Manuel, was turning his arms southwards and engaging the
          northern garrisons of Antioch. Nur-ad-Din joined in, to occupy the fortresses
          in the Afrin valley south of Azaz and on the eastern fringe of the Amuq depression, followed, in spite of Raymond’s attempted
          counter-attack, by the capture of Hab and Kafarlatha, which guarded the passage from the Rugia valley to the plain of Aleppo. But before the end of
          1147 the news of the approaching Second Crusade brought operations to an end,
          as all parties in Syria awaited, in hope or fear, what it might bring.
  
 How far, even yet, the Moslem princes were from
          the conviction of a common cause against the "infidel" is shown by
          the absence of any consultations or arrangements for mutual defense. It was not
          until the decision to attack Damascus became known that Unur sent out appeals for assistance. The panic caused at Aleppo and Damascus by the
          early reports of the vast host on the way had already been alleviated by the
          disasters in Asia Minor, and was even giving place to some degree of confidence
          when the forces actually engaged in the campaign were found to be so much
          smaller than had been expected. In the interval Saif-ad-Din had joined forces
          with Nur-ad-Din and begun to move southwards, but had advanced no farther than
          Homs when the siege of Damascus was abandoned July 28. There can be little
          doubt that their prospective intervention was a factor in the decision to do
          so, yet the ultimate consequence was to drive a still deeper wedge of suspicion
          between Aleppo and Damascus.
  
 The failure of the Second Crusade, coupled with
          the curious incident that followed in September, when Raymond II of Tripoli called
          in the united forces of the Zengids and Damascus to
          dislodge the son of Alfonso Jordan from the castle of al-Arimah,
          was utilized by Nur-ad-Din to attack the Frankish castles in central Syria. He
          then turned north to raid the lower reaches of an-Nahr al-Aswad, in order to counter a raid by Raymond of Antioch into Selchukid territory. In spite of a reverse at Yaghra, due to the jealousy of Shirkuh at the favor shown by Nur-ad-Din to his minister Ibn-ad-Dayah,
          he continued his operations towards Apamea in the following spring, while Unur, calling in the Turkomans, harassed the kingdom until
          an armistice was signed in May 1149.
  
 Relieved from further anxiety in the south, Unur was able to answer Nur-ad-Din’s appeal for
          reinforcements in the north, and the combined armies, some 6,000 strong, set
          out to besiege Inab, on the borders of the Rugia valley. Raymond of Antioch, hastening to its defense
          and forced by his barons to engage the superior Moslem forces, was disastrously
          defeated June 29 and himself killed in the battle.
  
 This, the most spectacular of Nur-ad-Din’s
          victories over the Franks, and coming at this early stage in his career, seems
          to have been the turning-point in his own conception of his mission and in the
          history of Moslem Syria. In the eyes of all Islam he had become the champion of
          the faith, and he now consciously set himself to fulfill the duties of that
          role. His first task was to deal with the heretics within his gates. On first
          occupying Aleppo he had shown some indulgence towards the Shiites, but in the
          last months of 1148, he had perhaps already begun to take measures against them
          and to break up their leadership. The Assassins of Masyaf were making common cause with the Franks; their chief, Ali ibn-Wafa, had contributed to the reverse at Yaghra and was killed on the Frankish side at Inab. But
          negative measures were not enough; the new counter-crusade was henceforth to be
          placed under the banner of orthodoxy, and Nur-ad-Dlin gave active encouragement to all the elements that could contribute to the
          revival of the faith, by the foundation of schools, mosques, and sufi convents, and to the unity of popular
          feeling, by the service of preachers, poets, and romancers. It entered into his
          political ambitions also. The campaigns soon to be opened against Damascus were
          preceded and accompanied by poetic denunciations and pointed demonstrations of
          the injury done to the cause of Islam by tile alliance of its political chiefs
          with the Franks. Later on, it was to range him against the Fatimids of Egypt.
          Whatever part private ambition may have had in his policy, it cannot be
          questioned that in the twenty-five years that lay ahead of him he was to go far
          towards creating the general unity and even exaltation of spirit amongst the
          Moslems of Syria of which Saladin was to reap the benefit after him.
  
 For the moment he set himself to make the most
          of his victory at Inab, and even hoped to seize
          Antioch in its temporary state of defenselessness. Foiled in these hopes by the
          patriarch Aimery and the speed of Baldwin’s advance to
          its support, he rejoined al-Yaghisiyani, whom he had
          previously detached to invest Apamea. After its surrender, he returned to the
          north and seized Harim and all the remaining castles east of the Orontes before
          concluding an armistice with Antioch. Masud, the
          sultan of Rum, also joined in the scramble for spoils, and having captured Marash, Sam, and Duluk, laid
          siege to Tell Bashir and appealed to Nur-ad-Din for assistance.
  
 But Nur-ad-Din’s interest at this moment lay in
          a different direction. On August 28 Unur of Damascus
          had died, and a violent struggle broke out between the prince Abak and rival parties among his officers. Before
          Nur-ad-Din could seize the opportunity to intervene, however, his brother
          Saif-ad-Din Ghazi of Mosul died also (September 6). On receipt of this news
          Nur-ad-Din rode hell-for-leather toward Mosul with a small party of followers,
          and reached and occupied Sinjar. A faction in the army of Mosul was favorable
          to his interest, but Ali Kuchuk and the vizier set up
          a younger brother, Qutb-ad-Din Maudud, as their
          prince, and when Nur-ad-Din was joined by the Artukid Kara Arslan, the Mosul forces marched out to give battle. The fratricidal
          strife was finally averted by the vizier, who persuaded Nur-ad-Din to surrender
          Sinjar in return for the surrender to him of Homs and Rahba.
  
 On his return to Syria Nur-ad-Din, after sending Shirkuh to join the sultan Masud at Tell Bashir, negotiated the raising of the siege on payment of tribute by
          Joscelin. His ally, the Artukid Kara Arslan, was
          engaged during the autumn and winter months in conquering the fortresses of Joscelin's Armenian vassals on the upper Euphrates,
          including Gargar. But Nur-ad-Din himself was mainly
          preoccupied with the affairs of Damascus. On the pretext of punishing the
          Franks for their raids on the Hauran he demanded
          reinforcements from its prince. The prefect, Muaiyid-ad-Din
          Ibn-as-Sufi who had by now established his control of the city, pleaded the
          treaty with Jerusalem. In the spring of 1150 Nur-ad-Din marched south, encamped
          outside the city, and repeated his demand for a thousand men to join him in an
          expedition to relieve Ascalon and Gaza. Although it
          is evident from the language of the Damascus chronicler that the popular
          sympathies lay with Nur-ad-Din, the prefect, no doubt remembering the former
          occasion when Damascus troops were sent under Sevinj to cooperate in the "holy war" with Nur-ad-Din’s father, refused the
          request in peremptory terms; but in the face of Nur-ad-Din’s threats he agreed
          to recognize Nur-ad-Din’s suzerainty, though without admitting him into the
          city.
  
 During his absence in the south, his Turkoman
          troops remained actively engaged against the territories of Tell Bashir and
          succeeded in capturing Joscelin. Instantly, the county was invaded from three
          sides. The Artukid Timurtash of Mardin seized Samosata and Bira, with other
          fortresses; the Selchukid sultan Masud reappeared before Tell Bashir and was joined by Nur-ad-Din, who had already
          captured Azaz. On the transfer of Tell Bashir to the Greek emperor Manuel; the
          siege was raised, but the two Moslem forces vigorously harassed the
          Franco-Armenian garrison and population on their evacuation to Antioch. During
          his withdrawal Masud seized Kesoun, Behesni, Raban, and Marzban, while Nur-ad-Din occupied in the course of the
          same autumn and winter Tall Khalid, Cyrrhus, and Ravendan. Early in the next year (1151) his general Hassan
          of Manbij renewed the siege of Tell Bashir, and with its surrender on July 12
          the former county of Edessa was extinguished.
  
 Nur-ad-Din’s absence in the north brought little
          relief to Damascus, where, in addition, the internal conflict was still
          unappeased. During the autumn of 1150 his Turkomans were sent to detach the
          province of Hauran and fought a pitched battle with a
          detachment of Damascene troops. In the spring of 1151 he again encamped outside
          the city and though he deprecated the shedding of Moslem blood, his forces
          engaged in skirmishes with the local forces and the villages of the Ghufah were plundered by the undisciplined followers of
          both sides. This attack on Damascus was the more pointed in that the Egyptian
          vizier Ibn-as-Sallar, perhaps taking Nur-ad-Din’s
          protestations of a desire to relieve the growing pressure on Ascalon at their face value, had in May 1150 sent an embassy
          to him to arrange for a joint attack on the Franks and had received his promise
          to participate. But when, in the following spring, the Egyptian fleet attacked
          the Syrian coastal towns from Jaffa to Tripoli, Nur-ad-Din remained inactive.
  
 On the approach of the Franks in June, he
          withdrew to az-Zabadani and sent a squadron to the Hauran, which subsequently engaged the Franks there and
          forced them to retire. He then resumed the siege of Damascus early in July and
          cut off its supplies, but held firmly to his decision not to engage in regular
          hostilities with its troops and citizens. Before the end of the month a fresh
          agreement was reached between the parties, the negotiators including Shirkuh on the one side and his brother Najm-ad-Din Aiyub on the other. The agreement was duly ratified in
          October by a ceremonial visit of the prince Abak to
          Aleppo, when he was formally recognized as Nur-ad-Din’s lieutenant in Damascus.
  
 Even yet, however, Nur-ad-Din was not satisfied.
          The Damascenes still regarded themselves as bound by their treaty with
          Jerusalem, and the Yuruk Turkoman irregulars, with or without the knowledge or
          consent of Nur-ad-Din, continued to operate in the districts of Damascus. In
          December 1151 they inflicted heavy losses on the Frankish garrison of Banyas and were engaged in consequence by the forces of
          Damascus; but Aiyub at Baalbek had almost immediately
          to take measures against a reprisal raid by the Franks in the Biqa valley. While Nur-ad-Din, in the following spring,
          was engaged in the north, where he seized Tortosa and Yaljmur, Abak strengthened
          himself by restoring his control over the Hauran,
          which had been shaken by the Turkomans.
  
 Early in 1153 Nur-ad-Din determined to exert his
          authority once more at Damascus and ordered Abak to
          join him with the whole of his regular forces in order to relieve the pressure
          on Ascalon. The combined armies, after capturing Aflis, marched to Banyas, where
          they split up in disorder and retired (May-June). This was the last straw, and
          while the disorders broke out afresh in Damascus, and Ascalon fell to the crusading armies, Nur-ad-Din, encamped at Homs, blockaded Damascus
          by preventing the passage of grain convoys. At the end of March 1154 Shirkuh appeared before the city, but was met with
          hostility. In April Nur-ad-Din himself arrived, and after brushing aside a show
          of resistance forced an entrance on April 25 “to the joy of the people, troops,
          and militiamen”. Abak surrendered and was recompensed
          with fiefs at Horns, and Shirkuh was invested with
          the governorship of the city. Baalbek still resisted, Aiyub having been replaced as governor of the citadel before the fall of Damascus by
          another officer, Dabbak; but in June 1155, after
          concluding an armistice with the kingdom of Jerusalem for one year, Nur-ad-Din
          forced its surrender. Aiyub rejoined Nur-ad-Din’s
          service either before or after this event, and was appointed governor of
          Damascus with Shirkuh as military commandant.
  
 Immediately after the occupation of Damascus
          Nur-ad-Din, in addition to reorganizing its defenses, began to apply there also
          his program of religious revival by the foundation of colleges and convents.
          Two other institutions of his deserve special note. One was the hospital (Maristan) which long remained one of the most famous
          of medieval infirmaries. The other was the dar al-adl or palace of justice, whose
          counterpart he had already instituted in Aleppo, where he himself, during his
          periods of residence in the city, sat in audience twice a week to deal with
          complaints, especially against the officers of the army and the administration.
          The stress which he laid on this part of a ruler’s duties is recognized in the
          title conferred on him by the caliph, apparently in this same year 1154,
          of al-malik al-adil "the just
          king".
  
 With the unification of all Moslem Syria, as
          well as the former county of Edessa, under his rule, Nur-ad-Din’s military
          power was now consolidated. Although little direct or detailed information on
          his military organization is preserved in the sources, it certainly followed
          the Selchukid feudal system, in which the officers
          and a number of the regular troops were assigned estates in lieu of pay,
          on condition of presenting themselves with adequate equipment and provisions
          for active service when called upon. The officers received estates graduated in
          size according to their rank, and were required to maintain a corresponding
          number of troops from their revenues; in the case of general officers placed in
          command of districts or provinces, these numbered several hundreds. The feudal
          army thus consisted of the ruler’s own regiments of guards, numbering perhaps
          some 2,000 under Nur-ad-Din, plus the regiments of his district commanders and
          vassals. The combined forces of Aleppo and Damascus at Inab amounted, as already noted, to 6,000 horse; and it is probable that the regular
          armies under Nur-ad-Din’s direct command never much exceeded this figure. When
          reinforced by the Artukid princes or from Mosul, or
          by auxiliary bodies of Turkomans or Arab tribesmen, his armies may well have
          reached 10,000 or even 15,000, exclusive of foot-soldiers and volunteers.
  
 In one feature Nur-ad-Din’s regular forces
          differed from most of the Selchukid armies, namely in
          the enrolment of large numbers of Kurds alongside the Turkish mameluks. The brothers Aiyub and Shirkuh were, though the most prominent, by no
          means the only Kurdish officers who attained high rank under him; and these in
          turn naturally attracted large numbers of their fellow-countrymen, both as
          regulars and as auxiliary troops. The local Arab sedentaries and militia, on the other hand, who had played so large a part in Syria during
          the preceding century, seem to have been suppressed or discouraged, no doubt as
          potential elements of insubordination. They are scarcely mentioned in the
          annals of Nur-ad-Diin’s campaigns, and reappear under
          Saladin only as auxiliary infantry and siege troops.
  
 Shortly after the capture of Baalbek, Nur-ad-Din
          returned to the north to intervene in the complicated struggle between the Selchukid and Danishmendid princes in Anatolia that followed the death of sultan Masud I in 1155. While his successor Kilij Arslan II engaged and defeated the Danishmendid Yaghi-Basan of Sebastia (Sivas) at Aqserai in
          September, Nur-ad-Din seized the opportunity to annex Aintab, Duluk, and Marzban, The indignant
          sultan retaliated by attempting to organize a coalition against him with Toros
          of Cilicia and Reginald of Antioch, but the only immediate action taken was a
          raid toward Aleppo by Reginald, who was overtaken and defeated near Harim by
          Ibn-ad-Dayah in the following spring. In the autumn
          amicable relations were restored between the two Moslem princes.
  
 The next five years were filled with anxieties,
          external and internal, for the preservation of the newly unified kingdom of
          Syria. In September 1156 began a series of severe earthquakes which repeatedly
          destroyed cities and fortifications in the northern half of his territories. In
          spite of the renewal of the truce with Jerusalem on the payment of a tribute of
          8,000 Tyrian dinars, it was broken again and again by attempts on the part of
          the Latins to take advantage of the disordered conditions in the country.
          Nur-ad-Din, preoccupied with measures for the defense of the ruined cities,
          established himself near Baalbek and sent out squadrons to deal with these
          attacks, at the same time sending an envoy to Egypt to organize cooperation
          with the Egyptian forces against the Franks.
  
 Encouraged by two successful engagements in
          April 1157, in which his brother Nusrat-ad-Din severely handled a force of
          Hospitallers and Templars on their way to Banyas with
          supplies, and Shirkuh with a body of Turkomans
          repulsed the raiders in the north, Nur-ad-Din concentrated his armies at the
          beginning of May for an assault on Banyas. Retiring
          before Baldwin's advance, he counterattacked the Frankish troops in camp at al-Mallahah on June 19 and destroyed the greater part, Baldwin
          himself barely escaping by flight. William of Tyre relates that Nur-ad-Din then
          returned to the attack on Banyas, but was forced to
          retire by the conjunction of the troops of Antioch and Tripoli with those of
          the kingdom. It seems more probable, however, that the reason for his
          withdrawal was a renewed series of earthquake shocks which began on July 4 and
          continued into November, with particularly serious results in Homs, Hamah,
          Apamea, and Shaizar, where the whole household of its Arab princes, the Banu-Munqidh, perished. Having attempted without success to
          renew the armistice with Baldwin, he left a force in the field to protect the
          territories of Damascus and himself moved north in August to occupy Shaizar and
          protect the other cities. By this move he forestalled the advance of the
          combined Latin forces, following on the arrival of Thierry of Alsace, count of
          Flanders, on the third of his four personal crusades, and on their
          concentration at Antioch Nur-ad-Din took up his position at Inab in readiness to meet the expected attack,
  
 Here he was attacked by a severe illness early
          in October, and after giving instructions that in the event of his death his
          brother Nusrat-ad-Din should be his successor at Aleppo, with Shirkuh as his lieutenant at Damascus, he withdrew to the
          citadel of Aleppo. Amidst the confusion which followed, Shirkuh moved south to protect Damascus. The rest of the army was temporarily
          disorganized, and the crusaders, reinforced by Toros and his Armenians,
          advanced on Shaizar without opposition. But the Assassins of Masyaf had long coveted its possession and seized the
          opportunity first; their stubborn defense of the citadel gave time for disputes
          to break out between the Frankish leaders, and the enterprise was abandoned.
  
 Meanwhile, in Aleppo itself the Shiites,
          thirsting to escape from the severe control of Nur-ad-Din, had, after
          extracting from Nusrat-ad-Din promises in their favor, forced the city gates,
          and organized a violent demonstration against the governor of the citadel,
          Ibn-ad-Dayah. But ocular proof that Nur-ad-Din was
          still alive was enough to quell the disturbance, and Nusrat-ad-Din was
          dispatched as governor to Harran. The army was still disorganized, however, and
          during Nur-ad-Din’s long convalescence failed to intervene when Baldwin, with
          the forces of Antioch and Tripoli, besieged and recaptured Harim in January or
          February 1158. Shirkuh had lately rejoined Nur-ad-Din
          at Aleppo, apparently with the object of reorganizing the Zengid forces, but his absence gave an opening to raiders from the kingdom of
          Jerusalem, who ravaged the country south of Damascus with impunity. In early
          spring, however, while contingents from Egypt began an extensive series of
          raids in the south of Palestine, Nur-ad-Din and Shirkuh returned from Aleppo and, after a raid on Sidon by the latter, joined forces in
          an attack on the stronghold called Habis Jaldak, on the south bank of the Yarmuk river (in May). On Baldwin’s advance to the northeast of Lake Tiberias, where
          he threatened the Moslem lines of communication, Nur-ad-Din joined battle but
          suffered a defeat, retrieved only by his personal courage (July 15). His
          proposals for an armistice having been rejected, Nur-ad-Din remained at
          Damascus, continuing the negotiations with the Egyptian vizier, but again fell seriously
          ill at the close of the year.
  
 In face of the imminent danger to Aleppo implied
          in the emperor Manuel’s sudden invasion of Cilicia, Nur-ad-Din had the oath of
          allegiance taken by his officers to his brother Qutb-ad-Din and sent envoys to
          Mosul to acquaint him with the decision, but before Qutb-ad-Din could arrive
          with his troops Nur-ad-Din recovered and himself set out towards Aleppo in
          March 1159. Although Manuel had already opened communications with Nur-ad-Din,
          his entry into Antioch at the end of March and the subsequent advance of the
          combined Greek and Latin forces to Imm made it
          necessary to neglect no precautions. On Nur-ad-Din’s urgent summons the forces
          of Mosul and contingents from all the vassal and allied principalities in
          Mesopotamia joined him east of Aleppo, and the city was further strengthened by
          an outer wall. But Manuel had little reason to desire the destruction of
          Nur-ad-Din's power, wishing rather to utilize him, negatively, to hold the
          Latins in check in Syria, and, positively, as an ally against Kilij Arslan in
          Anatolia. Negotiations were accordingly set in train at the end of May, and in
          return for Nur-ad-Din's surrender of Bertram of Toulouse, Bertrand of Blancfort, the master of the Temple, and other Frankish
          prisoners, the alliance was formed and Manuel withdrew to Anatolia, “having
          earned thanks and praise, and without injuring a single Moslem”.
  
 The immediate advantages which accrued to
          Nur-ad-Din from this situation were limited to the occupation of Raban, Kesoun, Behesni, and Marash while Kilij
          Arslan was engaged against the emperor and the Denishmendid Yaghi-Basan, in the course of 1160. During the same
          year Reginald of Châtillon fell into his hands,
          captured by Ibn-ad-Dayah on his return from a raid
          against Aintab in November. But in spite of the confusion which resulted from
          this in Antioch, Nur-ad-Din seems to have been unable to turn it to profit, and
          indeed after some raiding, he concluded an armistice with Baldwin. Either
          before or after this, however, he made an attack on Harim, which was repulsed
          by a combined force of Latins, Greeks, and Armenians, but succeeded in
          recovering Arzghan, which had been retaken earlier by
          Reginald.
  
 The two-year armistice with Baldwin relieved
          Nur-ad-Din’s anxieties over Damascus and the south, which had been exposed,
          almost unprotected, to some raiding during his northern campaign in 1160. But
          the course of events in Egypt set him a new, and even embarrassing, problem.
          When Shavar, driven out by Dirgam in August 1163, appealed for military assistance to reinstate him, Nur-ad-Din,
          already burdened with the task of maintaining his extensive territories with
          relatively small forces, hesitated. Finally, however, he was persuaded to
          accept the proposal by Shirkuh, “a man of great
          bravery and strength of character, and impervious to fear”, on the
          understanding that Nur-ad-Din should receive one-third of the revenues of
          Egypt, less the pay of his troops. Shirkuh set out
          late in April 1164 accompanied by his nephew Saladin, and defeated and killed Dirgam under the walls of Cairo in August. Shavar’s failure to observe his engagement led Shirkuh to occupy the province of Sharqiya;
          the vizier then called on Amalric for assistance on the former terms, and the
          joint forces of the Latins and Egyptians besieged Shirkuh in Bilbais for three months. At length Amalric agreed
          to treat; Shirkuh, already hard-pressed, consented to
          evacuate the town and return to Syria, and his withdrawal in October was
          followed by that of the Franks.
  
 Amalric’s eagerness to leave Egypt was occasioned by the disasters which Nur-ad-Din,
          profiting by the engagement of large Latin forces in Egypt, had inflicted on
          the Franks during his absence. Although his first diversionary raid towards
          Tripoli had ended in the all-but-total destruction of his force at Krak des Chevaliers (Hisn al-Akrad) in May, he had immediately called for and received
          substantial reinforcements from Mosul and the Artukid princes of Hisn Kaifa and Mardin, and with these he renewed the attack on Harim. All
          the available forces from Tripoli and Antioch, together with the Armenians and
          Greeks from Cilicia, rallied to its defense, but were drawn into battle and
          totally defeated in the plain of Artah at the
          beginning of August 1164. Bohemond III, Raymond III of Tripoli, the Greek duke Coloman, and Hugh of Lusignan were among the prisoners.
  
 The surrender of Harim followed in a few days.
          Nur-ad-Din, anxious to avoid drawing the Greeks into the defense of Antioch,
          and hoping to utilize the opportunity of Humphrey's absence in Egypt, with
          Amalric, dismissed the Mesopotamians and made a surprise march on Banyas. The garrison, deprived of all hope of relief,
          surrendered the castle on October 18, and the victory was signalized by an
          agreement to divide the revenues of Tiberias. In spite of the failure of Shirkuh'’s expedition to Egypt, therefore, the net result
          had been to consolidate Nur-ad-Din’s possessions in Syria and to raise his
          prestige to new heights in the Moslem world.
  
 But the continued evidences of Byzantine
          interest in Antioch deterred him from further military activities in the north,
          and led to a rapprochement with sultan Kilij Arslan, to whom he restored Behesni, Kesoun, and Marash in 1166 or 1167. Minor raids were probably
          undertaken in central Syria, and the Damascus troops under Shirkuh captured two cave strongholds, one near Sidon and the other cast of the Jordan.
          But on the whole it seems clear that Nur-ad-Din was biding his time, and
          watching with caution and possibly with anxiety the course of events both as between
          Latins and Greeks and in Mosul. Here his young and feckless brother Qutb-ad-Din
          had dismissed and imprisoned the vizier Jamal-ad-Din in the summer of 1163. The
          removal of his strong and experienced hand had created new tensions at Mosul,
          which the commandant, Ali Kuchuk, was unable to
          control. In 1167/1168, now half blind and deaf, he surrendered all his fiefs
          and governorships, except Irbil, to which he retired and which, on his death
          shortly afterwards, he left to his son Gokbori as his
          successor, under the control of his mamluk Mujahid-ad-Din Qaimaz.
          His place at Mosul was taken by a white mamluk of Zengi's,
          Fakhr-ad-Din Abd-al-Massib, under whom matters
          continued to deteriorate.
  
 In January 1167 Shirkuh again invaded Egypt, at the head of a detachment of Nur-ad-Din’s troops, with
          Turkoman reinforcements. No reason is assigned for this expedition except Shirkuh’s own desire to avenge himself on Shavar. As on the previous occasion, Nur-ad-Din, on Shirkuh’s departure, summoned the aid of Qutb-ad-Din’s
          forces from Mosul and engaged in widespread raiding and destruction in the
          territories of Tripoli, capturing al-Munaitirah (Le Moinestre) and destroying Chastel-Neuf
          (Hunin). Shirkuh's and Amalric's return, and dissensions between the troops of
          Aleppo and Mosul, brought the campaign to an end, and Nur-ad-Dln made over Raqqa to Qutb-ad-Din, who occupied it on the
          way back. In the following spring the rebellion of a governor — a rare event in
          Nur-ad-Din's career — involved an expedition to Manbij to displace him and a
          personal intervention at Edessa. Barely had he returned to Aleppo in April 1168
          when the Uqailid prince of Qalat Jabar, Malik ibn-Ali, was captured by the Kalb Arabs and brought to him as a
          prisoner. For many months, in spite of promises and threats, the Uqailid refused to surrender his fortress, which withstood
          alt the assaults of the Aleppo armies, but finally consented to exchange it for Saruj and other fiefs, and it was made over in
          October to Majd-ad-Din Ibn-ad-Dayah.
  
 With this conquest Nur-ad-Din put an end to the
          last of the independent principalities in northern Syria and became fully
          master of the territories to the west of the principality of Mosul. Only a few
          weeks later he received the urgent appeal from the Fatimid caliph and the vizir Shavar which led to Shirkuh's third and final expedition to Egypt. Its addition, in January 1169, to the list
          of provinces which acknowledged him as sultan or as suzerain seemed to be the
          apogee of Nur-ad-Dln's career. But his ambitions were
          growing with the extension of his power. Many years before, he had been foiled
          in the attempt to assert his authority over Mosul itself, and he had since
          watched for an opportunity to achieve this purpose. In 1166 or 1167, the Artukid prince Kara Arslan of Hisn Kaifa on his death had left his son and heir
          Nur-ad-Din Muhammad under the guardianship of Nur-ad-Din, who sharply
          intervened to restrain his brother Qutb-ad-Din at Mosul from asserting his
          suzerain rights over the principality. This protectorate served Nur-ad-Din’s
          purpose when Qutb-ad-Din died, at the age of forty, in August 1170, and the
          succession was disputed by his elder son Imad-ad-Din and younger son
          Saif-ad-Din Ghazi. Hastily assembling a light troop, Nur-ad-Din crossed the
          Euphrates, invested and reoccupied Raqqa, halted at Nisibin where he was joined by his Artukid namesake and other
          troops, took Sinjar by force and bestowed it on his nephew Imad-ad-Din, and
          advanced to Balad on the Tigris. A few days later
          Mosul surrendered, and Nur-ad-Din, having received the caliphs diploma for the
          city and its dependencies, reinstated Saif-ad Adin as his vassal, and placed
          his own mamluk Said-ad-Din Gumushtigin in command of
          the citadel. After receiving homage from Gokbori and Qaimaz of Irbil, he installed his own governors in the
          cities of upper Mesopotamia, and returned to Aleppo in March 1171.
  
 This expedition to Mosul could be made with the
          greater impunity since in the summer of 1170, beginning toward the end of June,
          a further series of earthquakes had laid in ruins a number of cities and their
          fortifications in northern Syria, including Antioch, Tripoli, Jabala, and Latakia, as well as Aleppo, Hamah, and Homs.
          Both sides, faced with the necessity of rebuilding their fortresses, agreed to
          a truce. In the autumn of 1171 this was broken by the seizure of two Egyptian
          merchant ships at Latakia. Nur-ad-Din in retaliation called up the troops of
          Mosul and upper Mesopotamia and engaged in a violent raiding campaign in the
          territories of Tripoli, during which he captured Arqah.
          Immediately afterwards he arranged with Saladin, now his lieutenant in Egypt,
          to join him in an attack on Kerak (Krak des
          Moabites), and in October moved south to meet him there. Saladin set out from
          Cairo at the end of September, but returned without meeting Nur-ad-Din, who
          abandoned the siege before the Latins under Humphrey could intervene. In the
          autumn of the next year he was again engaged against Frankish raiding parties
          in the Hauran, and sent a counter-raid against
          Tiberias. Although he was still actively seeking to stimulate public feeling in
          his territories in favor of the jihad, this was apparently his last
          contest with the Franks of Syria.
  
 For already, although he had built up a powerful
          war machine to be used against the crusaders, his ambitions had implicated him
          in a series of operations in the north which were to lead him into conflict
          with the Moslems of Anatolia instead. On the death of Toros of Cilicia in 1168,
          his brother Mleh, who held Cyrrhus as a fief from Nur-ad-Din, invaded Cilicia with the support of a contingent
          from Aleppo, which remained in his service and assisted him to drive out the
          Templars and Greeks from the fortresses and, in 1173, the cities which they
          held in Cilicia. An expedition organized by Amalric after his return from
          Constantinople in 1171 was interrupted by Nur-ad-Din’s attack on Kerak, and Mleh remained master of Cilicia until Nur-ad-Din’s death.
  
 During these events in Cilicia the Selchukid Kilij Arslan had been actively breaking up the Danishmendid principalities and annexing their territories, Albistan, Caesarea (Kayseri), and Ankara. In 1170 or
          1171 he attacked Melitene (Malatya), but was
          repulsed, owing to the intervention of the Artukid Nur-ad-Din of Hisn Kaifa.
          He then attacked the last Denishmendid stronghold, Sebastia, whose prince appealed to Nur-ad-Din. In the
          spring of 1173 he set out from Damascus, and after capturing Marash and Behesni, joined forces
          in August or September with Mleh and the troops of Melitene, and marched on Qalat ar-Rum, on the Euphrates north of Bira. At this point Kilij
          Arslan sent overtures for peace. The precise terms of the agreement are
          uncertain; according to some sources Kilij Arslan consented to restore Ankara
          and Sebastia to their princes, and Nur-ad-Din sent
          the former vizier of Mosul, Abd-al-Massih, with a
          contingent of his own troops to garrison Sebastia,
          but these returned to Aleppo on the news of his death.
  
 On his return, Nur-ad-Din made a leisurely
          journey to Damascus, where shortly afterwards he fell seriously ill, and died
          on May 15, 1174, leaving only a minor son as his heir. Almost instantaneously
          the territorial and military organization which he had built up with so much
          labor fell to pieces. But, in contrast to his father Zengi,
          he had by his life and conduct laid the foundations for that moral unification
          of Moslem forces on which alone a real political and military unity could be
          reared. It is ironical that the great name and reputation which he left was to
          prove one of the major obstacles to the efforts of his true successor Saladin,
          to resume his task and bring it to fruition.
  
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