• The USA and Soviet Union, in the aftermath of the Cuban crisis, accelerate steps for
    nuclear arms control.
  • The Partial Nuclear Test Ban Treaty is negotiated, co-sponsored by the USA, Soviet Union, and UK.
    It bans nuclear tests in the atmosphere, underwater, and in outer space.
  • In a speech in March 1963, US President Kennedy warns of a nuclear arms race:
    Personally I am haunted by the feeling that by 1970, unless we are successful,
    there may be ten nuclear powers instead of four, and by 1975, fifteen or twenty....
    I see the possibility in the 1970s of the President of the United States having to face a world in
    which fifteen or twenty or twenty-five nations may have these weapons.
    I regard this as the greatest possible danger and hazard.“
  President Kennedy