Uzun Hassan
In 1463, the Venetian Senate, seeking allies against the Turks, had sent Lazzaro Querini as its first ambassador to Persia, but he was unable to persuade Persia to attack the Turks. The ruler of Persia, Uzun Hassan, sent his own envoys to Venice in return. After Negroponte fell to the Turks, Venice, Naples, the Papal States, the Kingdom of Cyprus and the Knights of Rhodes signed an agreement to ally against the Turks.