The Serbs were counting on the armed intervention of Russia. Cherniaev was in charge of their main army. Along with his presence, Ignat′ev’s promises had led them to believe that this would be a repetition of the Balkan war of 1853–4, when Nicholas I had sent his army into the Danubian principalities in the expectation – ultimately disappointed – that it would encourage a war of liberation by the Slavs. Public opinion in Russia was increasingly belligerent. The nationalist press called on the army to defend the Christians against the Turks. Pan-Slav groups sent volunteers to fight on their behalf – and about five thousand made their way to Serbia.bj Subscriptions were organized to send money to the Slavs. Pro-Slav feeling swept across society. People talked about the war as a crusade – a repeat of the war against the Turks in 1854.
By the autumn of 1876 war fever had spread to the Russian court and government circles. Cherniaev’s army faced defeat. Responding to his desperate pleas for help, the Tsar sent an ultimatum to the Porte and mobilized his troops. This was enough to force the Turks to end hostilities against the Serbs, who duly made their peace with them. Abandoning the Serbs, the Russians shifted their support to the Bulgarians and demanded autonomy for them, which the Turks would not accept. With Austria’s neutrality assured through promises of gains in Bosnia and Herzegovina, in April 1877 Russia declared war on Turkey once again.
From the start, the Russian offensive in the Balkans assumed the character of a religious war. It was overwhelmingly redolent of the opening Russo-Turkish phase of the Crimean War. As the Russians crossed the Danube under the command of the Grand Duke Nikolai, they were joined by Slav irregulars, Bulgarians and Serbs, some of them demanding money to fight, but most fighting for their national cause against the Turks. This was the sort of Christian war that Nicholas had wanted when his troops had crossed the Danube in 1853–4. Encouraged by the rising of the Slavs, Alexander considered pushing on to seize Constantinople and impose a Russian settlement on the Balkans. He was urged to do so not only by the pan-Slav press but by his own brother, the Grand Duke Nikolai, who wrote to him after his armies had captured Adrianople, a short march from Constantinople, in January 1878: ‘We must go to the centre, to Tsargrad, and there finish the holy cause you have assumed.’ Pan-Slav hopes were at their height. ‘Constantinople must be ours,’ wrote Dostoevsky, who saw its conquest by the Russian armies as nothing less than God’s own resolution of the Eastern Question and as the fulfilment of Russia’s destiny to liberate Orthodox Christianity.
It is not only the magnificent port, not only the access to the seas and oceans, that binds Russia so closely to the resolution … of this fateful question, nor is it even the unification and regeneration of the Slavs. Our goal is more profound, immeasurably more profound. We, Russia, are truly essential and unavoidable both for the whole of Eastern Christendom and for the whole fate of future Orthodoxy on the earth, for its unity. This is what our people and their rulers have always understood. In short, this terrible Eastern Question is virtually our entire fate for years to come. It contains, as it were, all our goals and, mainly, our only way to move out into the fullness of history.51
Alarmed by the advance of the Russian troops to Adrianople, the British ordered their Mediterranean fleet to enter the Dardanelles and agreed in Parliament to raise £6 million for military purposes. It was a repeat of the movements that had led to the Crimean War. Under pressure from the British, the Russians agreed to an armistice with the Ottomans but continued advancing towards Constantinople, halting only under threat from the Royal Navy at San Stefano, a village just outside the Turkish capital, where on 3 March they signed a treaty with the Turks. By the Treaty of San Stefano, the Porte agreed to recognize the full independence of Romania, Serbia and Montenegro, as well as the autonomy of a large Bulgarian state (to include Macedonia and part of Thrace). In exchange for a narrow strip of land to the south of the Danube, Romania ceded back to Russia southern Bessarabia, the territory taken from the Russians by the Treaty of Paris. With the restoration of her Black Sea status completed seven years before, Russia had succeeded in reversing all the losses she had suffered after the Crimean War.