Conversation so far:
how do you explain us intervention in the third world during the cold war
When the Soviet backed North Korean People's Army invaded South Korea, American officials decided to intervene fearing a communist takeover.
What started the Cold War
The origins of the Cold War involved the breakdown of relations between the Soviet Union versus the United States, Great Britain and their allies in the years 1945 through 1949
When did the Cold War end
In late 1991 the Soviet Union itself dissolved into its component republics. With stunning speed, the Iron Curtain was lifted and the Cold War came to an end.
Who was the president of the Soviet Union when the Cold War ended
Mikhail Gorbachev was president of the Soviet Union from 1990 to 1991.

Question: When did the president resign
Self-contained rewrite: When did Mikhail Gorbachev resign