When and how tensions between the superpowers decreased and when and how the increased again worl war 2?

Tensions between the superpowers, primarily the United States and the Soviet Union, decreased after World War II during the late 1940s and early 1950s, particularly with the establishment of diplomatic relations and the signing of treaties, such as the U.S.-Soviet agreement on the control of nuclear weapons in 1963. However, tensions escalated again with events like the Soviet invasion of Afghanistan in 1979 and the U.S. response, which included supporting anti-Soviet forces. The Cold War saw fluctuating tensions, with periods of détente followed by renewed hostilities, culminating in significant geopolitical strife throughout the latter half of the 20th century.