AMMAN — The coalition around Kerbogha began the siege of Edessa in 1098 but failed to take the city after 40 days and continued to Antioch where they were supposed to face the advancing crusader's ...

AMMAN — Historians often underestimate the duration of the Kerbogha campaign against Crusaders, most historians based the start of the campaign on Heinrich Hagenmeyer’s dating of the siege of Edessa ...