The Cold War Era & Decolonization (1945–1991)
The Cold War (1945–1991) was an era of intense ideological, geopolitical, and military competition between the Western bloc led by the United States and the Eastern bloc led by the Soviet Union. While direct nuclear confrontation was averted under the doctrine of Mutually Assured Destruction (MAD), conflicts were fought through proxy wars in Korea, Vietnam, and Afghanistan. Key developments included the Truman Doctrine, the Marshall Plan, the formation of NATO (1949) and the Warsaw Pact (1955), the construction of the Berlin Wall (1961), and the Cuban Missile Crisis (1962). Simultaneously, sweeping decolonization movements dismantled European empires across Asia and Africa. The era culminated in the fall of the Berlin Wall in 1989 and the dissolution of the USSR in December 1991.
Key Concepts & Examination Highlights
- The Truman Doctrine of 1947 established American containment policy to counter Soviet geopolitical and ideological expansion.
- The Cuban Missile Crisis of October 1962 brought the United States and the Soviet Union to the brink of full-scale nuclear war.
- The North Atlantic Treaty Organization (NATO) was established in April 1949, followed by the Soviet-led Warsaw Pact in May 1955.
- Soviet leader Mikhail Gorbachev introduced 'Glasnost' (openness) and 'Perestroika' (restructuring) in the late 1980s, culminating in the dissolution of the USSR in 1991.