king fulk died in 1143, and zengi was assassinated in 1146. zengi was succeeded by his sons saif ad-din ghazi i in mosul and nur ad-din in aleppo, and mu'in ad-din took the opportunity to besiege baalbek; the governor, najm ad-din ayyub, father of saladin, quickly surrendered to him. mu'in ad-din also asserted control over homs and hama, and sent yarankash, the assassin of zengi, to nur ad-din, after yarankash sought refuge in damascus.