The unexpected president who steered the world through the dawn of the Cold War

Countries & Cities · Published 12 October 2026 Swipe more like this →

In short: After serving just 82 days as vice president, Harry S. Truman was thrust into the presidency following Franklin D. Roosevelt's death. He inherited a world at war, ultimately overseeing the atomic bombings of Japan and the transition from isolationism to a new era of internationalism.

Truman’s presidency, spanning from April 12, 1945, to January 20, 1953, was defined by a massive shift in American foreign policy. Moving away from isolationism, his administration helped establish the United Nations and the NATO military alliance in 1949. However, his tenure was also marked by the onset of the Cold War, as tensions with the Soviet Union escalated after 1945. He also implemented the Truman Doctrine to stop the spread of Communism in Greece and Turkey. Additionally, the Marshall Plan was approved by Congress to assist the rebuilding of Western Europe.

Domestically, Truman pursued an ambitious liberal agenda known as the Fair Deal, but he faced significant resistance. A conservative coalition in Congress frequently blocked his initiatives, notably passing the Taft–Hartley Act over his veto in 1946. This legislation reversed several pro-labor measures that had been central to the New Deal. Despite these setbacks, Truman achieved some successes, such as the Housing Act of 1949 and his decisive stance on civil rights, which included ordering equal rights within the military. His administration also oversaw the creation of the first Secretary of Defense in 1947. Furthermore, he made several significant appointments to the Supreme Court, including Fred M. Vinson.

The later years of his presidency were complicated by the Korean War, which began in 1950 and resulted in a long-lasting stalemate. His decision to dismiss General Douglas MacArthur caused a significant loss of public support, contributing to his low popularity by the end of his term. While he withdrew from the 1952 election due to this unpopularity, his historical reputation has recovered, with many scholars now ranking him among the ten greatest presidents. The conflict in Korea eventually reached a stalemate that persisted for much of his remaining time in office. This period was also marked by a Second Red Scare and fears of Soviet espionage.

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