 Complete the following phrase:  In January 1915, the British Cabinet had canvassed possible diversionary attacks against the Ottoman Empire after appeals for support from the Russian Empire. The British planned operations against the Ottoman Empire in the Aegean Sea, eastern Mediterranean and a land invasion of the Levant from Egypt, combined with a Russian invasion from Caucasus towards Anatolia and Mesopotamia. In 1917, the Eastern Committee of the War Cabinet considered that British India had been drained of troops and decided to avoid committing more troops to Iran from Europe, by sending a mission of picked men to train local recruits at Tiflis now Tbilisi, the capital of Georgia. The War Office undertook to send officers and to organise local forces and replace the Russian Caucasus Army. Another force was to be raised in north-western Iran by Lieutet-General W. R. Marshall, commander of the III Indian Corps of the 