<Li> Other political groups were trying to undermine him . </Li> <Li> Heavy military losses were being suffered on the front . </Li> <Li> The soldiers were dissatisfied and demoralised and had started to defect . (On arrival back in Russia, these soldiers were either imprisoned or sent straight back into the front .) </Li> <Li> There was enormous discontent with Russia's involvement in the war, and many were calling for an end to it . </Li>

Who was the leader of the russian revolution in 1917