The Cold War was a conflict between the Western powers (America and Western Europe) and the Soviet Union. The Cold War is an important theme in Casino Royale because it drives the main plot and provides part of Bond's motivation to become a spy.
The Soundgarden and Audioslave frontman’s Bond theme for Casino Royale became arguably his best known song, and was highly praised in the media – with one critic labelling it “the best Bond.
