The time for undisturbed intervention in the East was most auspicious for Russia. Peace with Persia was concluded early in the year. By the treaty of Tourkmanchay, Fet Aly of Persia ceded to Russia the provinces of Erivan and Nakhitchevan and paid an indemnity of 20,000,000 roubles. The river Araxes was recognized as the frontier of both states. England's ascendency in Persia was effectually set at naught. Even in China Emperor Taouk-Wang felt encouraged to issue edicts prohibiting England's pernicious opium trade on the Chinese coast. Russia's armies were now let loose on Turkey.
In the meanwhile, the Greeks profited by the Turkish check at Navarino to assert themselves as an independent people. On January 18, Capodistrias, the former Prime Minister of Russia, was summoned from Geneva and made president of the Greek republic. His term of office was to last seven years. This eminent statesman justified his selection by immediate beneficent measures. A grand council of state was established and a national bank opened in Athens. With the help of France, immunity from further incursions from the Turks was practically assured. To preserve the _status quo_ in Greece, Russia undertook to limit its single handed war on Turkey to operations on the mainland and in the Black Sea. Within the waters of the Mediterranean the Czar proposed to continue as an armed neutral in harmony with the other Powers under the treaty of London, and, to allay the apprehensions of Austria, the Russian forces in the Balkans were ordered to carry their line of operations as far as possible from Austria's sphere of influence. A still more effectual check on Austria was secured by the Czar's secret encouragement of French aspirations toward the Rhine. Charles X. exposed the plot when he said: "If the Czar attacks Austria, I will hold myself in reserve and regulate my conduct according to circumstances. If Austria attacks, I will instantly march against her." As Prince Metternich put it, "The two powers were at one: France against the European _status quo_; Russia against that of the Orient."
[Sidenote: Holy War proclaimed in Turkey]
Although the recent Turkish concessions to Russia left to the Czar no ground for war, a pretext was supplied by Sultan Mahmoud himself. With true Turkish infatuation he chose this moment to issue a direct challenge to Russia. The Czar was denounced as the instigator of the Greek rebellion, and the arch enemy of Islam. The treaty of Akerman was declared null and void. A holy war was proclaimed against the Muscovites. "The Turk does not count his enemies. If all the unbelievers together unite against us we will enter on the war as a sacred duty, and trust to Allah for help." This proclamation was followed by the expulsion of all Christians from Constantinople. Unfortunately for the Sultan, his recent massacre of the Janizaries deprived him of the flower of his troops, and the reorganization of the Turkish army, which was the motive of that act, was only under way. For seven years the Russians had been preparing for this war. Nicholas lost no time in answering the Sultan's challenge. He replied with a declaration of war on April 26. Field Marshal Wittgenstein crossed the Pruth, while Paskievitch entered Asia Minor. The Russian troops overran the Roumanian provinces, Wallachia and Moldavia. The Danube was crossed early in June, under the eyes of the Czar. Unable to meet their enemy in the open field, the Turks withdrew into their strongholds, Ibraila and Silistria on the Danube, Varna and Shumla in the Balkans. The Russians besieged and stormed Ibraila, and thence pushed on through the Dubrudsha toward the Black Sea. In the meanwhile Paskievitch in Asia Minor defeated two Turkish armies and captured Erzeroum.