Russia broke off diplomatic relations. Many of the Tsar’s advisers favoured war. The Greek revolt had spread to central Greece, the Peloponnese, Macedonia and Crete. Unless the Russians intervened, they feared that in these regions it would be repressed with similar atrocities to those in the principalities. In 1822 Ottoman troops brutally crushed a Greek uprising on the island of Chios, hanging 20,000 islanders and deporting into slavery almost all the surviving population of 70,000 Greeks. Europe was outraged by the massacre, whose horrors were depicted by the French painter Eugène Delacroix in his great masterpiece
Such ideas were widely shared by high officials, army officers and intellectuals, who were increasingly united in the early 1820s by their Russian nationalism and at times by an almost messianic commitment to the Orthodox cause. There was talk of ‘crossing the Danube and delivering the Greeks from the cruelties of Muslim rule’. One leader in the southern army called for a war against the Turks to unite the Balkan Christians in a ‘Greek Kingdom’. The pro-war lobby also had supporters at the court, where the legitimist principles of the Holy Alliance were more strictly recognized. The most enthusiastic was Baroness von Krüdener, a religious mystic who encouraged Tsar Alexander to believe in his messianic role and campaigned for an Orthodox crusade to drive the Muslims out of Europe and raise the cross in Constantinople and Jerusalem. She was dismissed from the court and ordered by the Tsar to leave St Petersburg.13
Alexander was far too committed to the Concert of Europe to give serious consideration to the idea of unilateral Russian intervention to liberate the Greeks. He stood firmly by the Congress System established at Vienna by which the great powers had agreed to resolve major crises through international negotiation, and realized that any action in the Greek crisis was bound to be opposed. By October 1821 a European policy of international mediation over Greece had already been coordinated by Prince Metternich, the Austrian Foreign Minister and chief conductor of the Concert of Europe, together with the British Foreign Secretary, Lord Castlereagh. So when the Tsar appealed to them for support against Turkey, in February 1822, it was agreed to convene an international congress to resolve the crisis.
Alexander called for the creation of a large autonomous Greek state under Russian protection, much like Moldavia and Wallachia. However, Britain feared that this would be a means for Russia to advance its own interests and intervene in Ottoman affairs on the pretext of protecting its co-religionists. Austria was equally afraid that a successful Greek revolt would set off uprisings in parts of central Europe under its control. Since Alexander prized the Austrian alliance above all, he held back assistance to the Greeks, while continuing to urge collective European action to help them. None of the powers would support the Greeks. But two things happened in 1825 to change their minds: first, the Sultan called in Mehmet Ali, his powerful vassal in Egypt, to put down the Greeks, which the Egyptians did with new atrocities, giving rise to an ever-growing wave of pro-Greek sympathy and ever-louder calls for intervention in liberal Europe; and then Alexander died.