You use the word "hostilities" which to most people means actual war.
The Union of Soviet Socialist Republics and The United States Of America never came into direct military conflict. They did not actually fight each other, ever.
What they did do was to use other countries to fight for them, as surrogates, or stand-ins. This happened in Korea, and in Viet Nam, and in Laos, and in Cambodia. Another example was the use of spies, to try to learn the military secrets of the other side's plans and new weapon systems. Again the use of surrogates was common.
The term "Cold War" is used to describe the period from 1949 to 1990, when the two world super powers were face to face and threatening the whole world with total destruction. The combined Atomic and Nuclear weapons of the USA and the USSR would have killed man kind, and burned the earth to cinders. Total combined mass murder.
The Soviet Union supported the Democratic Republic of Vietnam (North Vietnam) under Ho Chi Minh.
When two or more nations experience a lessening of hostilities the result is called detente. The United States and the Soviet Union experience this in the early 1980s.
The city of Brest-Litovsk is where the treaty ending hostilities in World War I between Russia and Germany was signed.
The Cold War
Detente
the Cold War and the arms race with the Soviet Union
The Soviet Union supported the Democratic Republic of Vietnam (North Vietnam) under Ho Chi Minh.
By leading Americans to view Communist beliefs as dangerous to the United Statesr
When two or more nations experience a lessening of hostilities the result is called detente. The United States and the Soviet Union experience this in the early 1980s.
The city of Brest-Litovsk is where the treaty ending hostilities in World War I between Russia and Germany was signed.
Relations between US and Soviet Union during Cold War Relations between US and Vietnam during Vietnam war Soviet relations with PRC
The Cold War.
The Cold War
Detente
The Soviets shot down an American spy plane.
Type your answer here... The United States and the Soviet Union began building up their military forces very quickly.
10.7 Million USSR Soldiers were killed during World War 2. All of them from the Soviet Union.