Postwar Rivalry Combined Ideology, Security, and Power
After World War II, the United States and Soviet Union possessed enormous military power and promoted different political-economic systems. Soviet control in eastern Europe, Western fears of expansion, United States economic influence, Germany’s future, and memories of invasion intensified distrust. The Truman Doctrine and Marshall Plan became parts of containment, while the Berlin blockade and airlift, competing alliances, and arms racing hardened division. Historians debate responsibility because leaders reacted to genuine fears while also expanding influence through choices that deepened the conflict. Nuclear weapons made direct superpower war potentially catastrophic. Deterrence depended on an opponent believing that attack would bring unacceptable retaliation, but accidents, miscalculation, and escalation remained dangers. The Cuban Missile Crisis showed both risk and diplomacy. Cold War competition also shaped Korea, Vietnam, Afghanistan, Latin America, Africa, and the Middle East through local wars, outside weapons, aid, covert operations, and political intervention. Calling these conflicts only “proxies” can erase local causes and actors who had their own aims