Why did Russia withdraw from World War I?

Russia withdrew from World War I because the Bolsheviks, who had promised the Russian people "peace, land, and bread," came to power after overthrowing the provisional government. This provisional government, headed by moderates, had seized power from Tsar Nicholas, forcing him to abdicate in March of 1917. But the provisional government failed to remove Russia from the war, angering many, especially workers in Petrograd, the imperial capital. Led by Vladimir Lenin, the radical Bolsheviks launched...

Russia withdrew from World War I because the Bolsheviks, who had promised the Russian people "peace, land, and bread," came to power after overthrowing the provisional government. This provisional government, headed by moderates, had seized power from Tsar Nicholas, forcing him to abdicate in March of 1917. But the provisional government failed to remove Russia from the war, angering many, especially workers in Petrograd, the imperial capital. Led by Vladimir Lenin, the radical Bolsheviks launched a revolution in late 1917 that overthrew the provisional government, giving power to revolutionary committees known as soviets, and withdrawing Russia from the war. With a civil war between the Bolsheviks and a coalition of their enemies raging, the Treaty of Brest-Litovsk formalized Russia's exit from the war in 1918. The treaty was later negated by Germany's surrender later in that year, but the Russians, whose civil war dragged out until 1921, did not participate directly in the peace process that followed.