Cold War: This term refers to the ideological and geopolitical tension between the United States and Soviet Union after World War II until 1991, characterized by proxy wars and arms races.
Gulf War: A military conflict in 1990-1991 between Iraq under Saddam Hussein's regime and a coalition led by the United States, triggered by Iraq's invasion of Kuwait.
Vietnam War: A prolonged war (1955-1975) fought between communist North Vietnam supported by the Soviet Union and China, and non-communist South Vietnam supported by the United States.