a written and signed agreement between countries to stop testing nuclear weapons

He proposed creation of a Peace Corps, and pressed for a nuclear test ban treaty with the Soviet Union. 他提议成立和平队，并敦促与苏联签订禁止核试验条约。

1963 was the same year the UK, the US, and the Soviet Union signed the Partial Test Ban Treaty, which limited nuclear testing. 1963年是英国、美国和苏联各自在《部分禁止核试验条约》上签字的同一年，该条约旨在限制核武器的试验。