What was the Cold War?
a war fought in Antarctica
an attempt by the Soviet Union to invade the U.S. through Canada
a period of difficult relations between the U.S. and the Soviet Union
the nickname for the battle fought during World War II
In very general terms, the Cold War was "a period of difficult relations between the U.S. and the Soviet Union," since although there were a number of "proxy wars" during this time, the US and the USSR never engaged directly in conflict.
