How did Eastern Orthodox Christians view the crusades?

Eastern Orthodox Christians generally viewed the Crusades with suspicion and hostility. Initially, they hoped the Crusaders would help reclaim the Holy Land from Muslim control, but many were disappointed by the violent and often pillaging behavior of the Crusaders, particularly during events like the Fourth Crusade, which culminated in the sack of Constantinople in 1204. This betrayal deepened the rift between Eastern and Western Christianity and fostered a lasting animosity towards the Crusaders in the Orthodox world. Overall, the Crusades were seen as a series of invasions rather than a genuine effort to aid fellow Christians.