Michael VIII dismissed sixty Genoese ships from his service and, according to Canal, severely dressed down the Genoese podestà in Constantinople. Genoese ships were soon allowed to return to Imperial service, but Michael VIII began to delay the payments for their crews. The Byzantine–Genoese rift culminated in 1264, when the Genoese podestà was implicated in a plot to surrender Constantinople to Manfred of Sicily, whereupon the Emperor expelled the Genoese from the city. Michael VIII signed a treaty with the Venetians on 18 June 1265, but it was not ratified by Doge Zeno. In the face of the threat from Charles of Anjou after 1266, Michael VIII was forced to renew his alliance with Genoa, but also maintained his détente with Venice, signing a five-year non-aggression pact in June 1268. Footnotes References Sources 1260s in the Byzantine Empire 1263 in Europe 13th century in Greece Conflicts in 1263 Medieval Aegean Sea Michael VIII Palaiologos Naval battles involving the Byzantine Empire Naval battles of the Venetian–Genoese wars Military history of Greece War of Saint Sabas Byzantine Empire–Republic of Genoa relations