 Complete the following phrase:  The decline of the Russian Army led the Ottomans to advance towards the Caspian Sea, where the Germans and Ottomans intended to capture Baku. Internal disagreements made their progress very slow and in the south after April, Armenians, Assyrians and some Russian troops, managed to stop the advance near Urmia in north-west Iran, about from the Persian road. Iran was politically unstable and agents of the Central Powers attempted to exacerbate British problems in India; Dunsterforce intended to be an extension of the cordon in Iran, intended to prevent the unrest spreading to India. From the British railhead in Mesopotamia to the Caspian shore was about and the motor-column passed through the last British outpost at Pai Tak also Pai Taq, then drove through Kermanshah on, Hamadan and then Kazvin further, to the Elburz mountains, over the Bulagh Pass and into the jungle lowlands of Gilan Province, home of the 