Course of the War:
There were wholesale massacres on both sides, notably the destruction by the Turks of the inhabitants of Chios. The Turks were unable to suppress the revolt. The Greeks under Kolokotrones exhausted the Turkish army, and assistance was sought by the Sultan from Mehemet Ali, of Egypt, who in 1823 conquered Crete and defeated the Greeks at Psara. The Egyptians and Turks entered Morea. Missolonghi fell after a year’s siege, and the garrison in the Acropolis at Athens surrendered in June 1827. By a treaty signed at London in July 1827 Great Britain, France, and Russia decided to intervene as mediators. The Turks rejected mediation. The victory of the allied fleets at Navarino took place on October 20 1827.