end of cold war

Question 1

when and where was START 1 formed

Answer 1

In a visit to Moscow in 1972, Nixon signed the Strategic Arms Limitations talk (SALT I) which saw both superpowers working to limit their arms

Question 2

when prevention of nuclear war treaty signed

Answer 2

when Brezhnev visited Nixon in 1973

Question 3

what were the agreements made during the Helsinki Agreement (1975)

Answer 3

Declared that the borders of Europe were inviolable, and conflicts were to be resolved peacefully (USSR)
There would be trade, technology and cultural exchanges between the signatories (USSR)
The preservation of human rights, such as the freedom of speech and movement (USA) USSR violated this agreement