-
Relations between the Soviet Union, China and the USA deteriorated during the Vietnam War.
-
A hot-line is established after Cuban Missile Crisis between the USSR and the US. Both agreed to only use underground tests for nuclear explosions
-
China invited an American table tennis team to China in order to improve relations.
-
Richard Nixon met Zhou Enlai in February 1972.
-
Nixon meets with Leonid Brezhnev
-
Brezhnev vists the United States.
-
Nixon again visits Russia
-
USA, USSR, Canada and other major European powers accept European frontiers set up after World War Two. This recognised that Germany was divided and East European countries agreed to allow their people human rights such as freedom of speech.