The Crusader army was in debt to the doge of Venice, who had provided their fleet. He instructed them to attack the rebellious cities of Trieste, Moglia, and Zara and beat them into submission before sailing for Cairo. The Pope was angered by these Christian cities being attacked by a Crusader army. The doge, Enrico Dandolo, was now the true war leader of this Crusade, with Boniface as only a figurehead. Alexius Angelus made many promises to the Crusaders and their principal financer, the doge of Venice, for riches and honors if they would help him reclaim his empire. Dandolo placated the Pope by having Alexius Angelus promise to submit the Orthodox Church to Rome when he was restored to his throne in Constantinople. This being done, the fleet set sail for Constantinople in 1203.