With the. Russia, or (more widely) its former empire or the former Soviet Union.

a federation of Russian states; spec. (a) the Russian Soviet Federated Socialist Republic (RSFSR, 1918–92), the largest of the constituent republics…

Of, relating to, or having, a system of government based on soviets; Soviet Union: the Union of Soviet Socialist Republics.

the land of Bolshevism; Russia under the rule of the Bolsheviks.

Union of Soviet Socialist Republics (Russian Soyuz sovetskikh sotsialisticheskikh respublik).

In Russia and (formerly) the Soviet Union: the people, the nation; (spec. in Russian and Soviet political ideology) the common people viewed as the…

slang. As Redland. (A name for) the Soviet Union. Also: (a name for) the countries of the Warsaw Pact considered collectively. Now historical.

= Soviet, n. 2. Usually in plural with the.