Answer: Detente.
Step-by-step explanation:
The easing of relations between the East and West during the Cold War was termed "Detente." Detente was a French word meaning relaxation, and it referred to a period of improved relations between the United States and the Soviet Union in the 1970s, marked by arms control agreements, increased economic and cultural exchanges, and a decrease in tensions between the two superpowers. "Glasnost" and "Perestroika" were terms used during the later period of the Cold War to describe reforms in the Soviet Union under Mikhail Gorbachev. "The Warm War" is not a commonly used term to describe this period of history.