The balance of power between the Muslims and the Crusaders changed after the Battle of Barin (531 AH/1136 AD)

Medieval history witnessed many important and decisive events in the incidents of the Islamic Crusader conflict, and the Battle of Barin (531 AH / 1136 AD) is considered a turning point in the balance of power between the Muslims and the Crusaders, and indeed a milestone between them. The main purpose of this study is to conduct a historical monitoring of that site, by probing the depths of the various historical sources, and analyzing the information contained within it about its introductions, events and results. After that, there was a change in the balance of power for the two parties, and thus this change was reflected in the course of the Islamic resistance to the Crusaders.