The Cold War was a period of geopolitical tension between the United States and the Soviet Union and their respective allies, the Western Bloc and the Eastern Bloc, that started in 1947, two years after the end of World War II and lasted to 1991, the fall of the Soviet Union.
Allied troops in Vladivostok, August 1918, during the Allied intervention in the Russian Civil War
American Relief Administration operations in Russia, 1922
Lenin, Trotsky and Kamenev celebrating the second anniversary of the October Revolution
The Battle of Stalingrad, considered by many historians as a decisive turning point of World War II
Geopolitics is the study of the effects of Earth's geography on politics and international relations. While geopolitics usually refers to countries and relations between them, it may also focus on two other kinds of states: de facto independent states with limited international recognition and relations between sub-national geopolitical entities, such as the federated states that make up a federation, confederation, or a quasi-federal system.
Division of the world according to Haushofer's Pan-Regions Doctrine