It ended when a Revolt to overthrow the czars(russian leaders). After a successful revolt and overthrow the new government made a pact with Germant to end the war with Russia(not the whole war).
World War 1 left Russia's economy in complete devastation. By the end of the war Russia had 8,000,000,000 rubles of debt.
The estimated number of Russian casualties at the end of the Second World War was 23,400,000.
The Russo-Japanese War (Which Russia lost - making Nicholas unpopular with the Russian people) World War I (but the Tsar abdicated and was murdered before the war's end)
There were many soldiers at the end of the World War 1 during the end of the world war.
The USSR (Russia).
Joseph Stalin
Russia was taken out of World War One by Lenin and his agreement with Germany to end Russia's participation in the war. The assassination of Czar Nicholas II and his family had nothing to do with Russia's end as a player in WW 1.
At the end of World War II, Russia brought down the 'Iron Curtain' (1945 until the end of the Cold War in 1991) in an effort to separate Russia and its satellite countries from open contact with the West.
Lenin agreed to the Treaty of Brest-Litovsk to end Russia's involvement in World War 1.
General Dwight Eisenhower did not consider invading Russia at the end of World War II. It would have been a lost cause because no one wanted more war.
world war I
Russia didn't withdraw from World War 2. They were in the fight until it was over. In World War 1, Russia broke into a civil war, referred to as the Russian Revolution, causing the Communists to take over Russia, creating the Soviet Union.