The Cold War was reflected in culture through music, movies, books, television, and other media, as well as sports, social beliefs, and behavior. Major elements of the Cold War included the threat of communist expansion, a nuclear war, and – connected to both – espionage. Many works use the Cold War as a backdrop or directly take part in a fictional conflict between the United States and the Soviet Union. The period 1953–62 saw Cold War themes becoming mainstream as a public preoccupation.