If one goes by the Julian calendar then in use in Russia, Vladimir Lenin and his Bolsheviks were leading Russia in March 1917.
If one goes by the Gregorian calendar then in use by the western world, the Provisional Government under Alexander Kerensky was leading Russia in the beginning of March 1917 then Vladimir Lenin and the Bolsheviks did.
Joseph Stalin was the leader of Russia in 1939.
Albert Lebrun
David Lloyd George was the leader of Brittain during ww1
In 1919-1920 the main leader of Poland was Józef Piłsudski. Another political leader was Roman Dmowski.
Tsar Alexander III, Nicholas's father, was the leader of Russia before Nicholas II.
Joseph Stalin was the leader of Russia in 1939.
Hitler was never the leader of Russia.
Albert Lebrun
China
An elected President.
Romanian Volunteer Corps in Russia ended in 1919.
David Lloyd George was the leader of Brittain during ww1
Lenin
Vladimir Lenin is the leader who wanted to get Russia out of World War 1.
The formal title for the leader of Russia is "President." The current President of Russia is Vladimir Putin.
Communism in Russia
he became leader of Russia