The Siege of Zara took place in 1202 during the Fourth Crusade. The city of Zara, located on the Adriatic Sea, was a Christian city but was attacked by Crusaders who were diverted from their original mission to the Holy Land. The siege lasted from November 1202 to April 1203, resulting in the city's capture. The Crusaders, motivated by political and financial interests, were supported by the Venetians, who sought to expand their influence in the region. The siege ended with Zara being sacked, leading to significant destruction and loss of life, and it marked a controversial moment in the history of the Crusades.