Who was to blame?

There are four beliefs on who was to blame for the Cold War.

1. Traditionalists

Soviet expansionism was to blame.

2. Revisionists

The USA's economic imperialism and atomic diplomacy was to blame

3. Post Revisionists

Neither the USA nor the USSR was to blame. It due to a misunderstanding and inability to appreciate each other's fears.

4. Modern

It was due to a clash of ideologies between the communist and democratic, capitalist systems.