Until the beginning of World War I, Russia effectively ruled Iran, but, with the outbreak of hostilities, Russian troops withdrew from the north of the country, and Iranians convened the third Majles. Jubilation was short-lived, however, as the country quickly turned into a battlefield between British, German, Russian, and Turkish forces. The landed elite hoped to find in Germany a foil for the British and Russians, but change eventually was to come from the north. Following the Russian Bolshevik Revolution in 1917, the new Soviet government unilaterally canceled the tsarist concessions in Iran, an action that created tremendous goodwill toward the new Soviet Union and, after the Central Powers were defeated, left Britain the sole Great Power in Iran.
