Page 522

522 A HISTORY OF THE CRUSADES I 90n the capture of Ma~yãf by the Assassins
see above, chapter IV, p. ii~.10 Cf. below, chapter XVII, p. 542. 
for disputes to break out between the Frankish leaders, and the enterprise
was abandoned.~ 
 Meanwhile, in Aleppo itself the Shicites, thirsting to escape from the severe
control of Nür-ad-Din, had, after extracting from Nu~rat-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
Nür-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 Nür-ad-DIn's long convalescence failed to intervene
when Baldwin, with the forces of Antioch and Tripoli, besieged an~d recaptured
Uarim in January or February 1158.10 ShIrkflh had lately rejoined Nür-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, Nür-ad-Din and ShIrküh returned from
Aleppo and, after a raid on Sidon by the latter, joined forces in an attack
on the stronghold called Uabis 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, Nür-ad-Din joined battle
but suffered a defeat, retrieved only by his personal courage (July 15).
His proposals for an armistice having been rejected, Nür-ad-Din remained
at Damascus, continuing the negotiations with the Egyptian vizir, 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 Qu~b-ad-DIn and sent envoys to Mosul to acquaint
him with the decision, but before Qutb-ad-Din could arrive with his troops
Nür-ad-Din recovered and himself set out towards Aleppo in March 1159.
Although Manuel had already opened communications with Nür-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 Nflr-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