* A period of geopolitical tension between the Soviet Union and its satellite states, and the United States and its allies.
* Lasted from the end of World War II in 1945 to the dissolution of the Soviet Union in 1991.
* Characterized by political and military competition, espionage, propaganda, economic sanctions, and the development and deployment of nuclear weapons.
World War I
* A global conflict fought between the Central Powers (Germany, Austria-Hungary, and the Ottoman Empire) and the Allies (France, Russia, the British Empire, Italy, Japan, and the United States).
* Lasted from 1914 to 1918.
* Characterized by trench warfare, the use of new military technologies such as tanks and airplanes, and the deaths of millions of soldiers and civilians.