Baku and found itself in contact with the Armenian Catholicos and the eastern fringes of the Ermeni community in the Ottoman Empire. In further accord with its policy of undermining that Empire, it availed itself of the presence of the Armenians in the usual imperialist manner and, in its war of 1876 against the Sultan, it drove its way deeply into his eastern provinces, transferring the Armenians from Ottoman to Russian sovereignty as it went. Its objective was the great bay of Alexandretta on the Mediterranean which was to free it of its Black Sea jail, a scheme which Great Britain recognized by secretly taking over the "administration" of Cyprus from the Sultan. The treaty of San Stefano stopped the Russian advance hundreds of miles short of Alexandretta and in front of the new Ottoman frontier, Russia developed Kars into a great fortress as a base for its further advance toward Alexandretta when opportunity offered.
Having seized Batum from the Sultan, Russia continued the consolidation of Trans-Caucasia under its own provincial governors and stamped the entire region with the unmistakable imprint of a Russian economic regime. It pierced the barrier of the Caucasus Range with a military highroad to Tiflis, which it prolonged as a railroad to Kars and the Armenian center of Erivan. It drove its railways past the east end of the Caucasus Range to make a Russian railhead and a Russian Caspian port of Baku, around which lay one of the greatest oil-fields in the world. It developed the village of Batum into a fortified Russian port on the Black Sea and with its Trans-Caucasian railroads from Batum via Tiflis to Baku, it made Batum the gate to the
