Things we believed during the Cold War that ended up being wrong

But it was in Asia where the workers' unity really collapsed. Communist Russia and China went to war in 1969, and at least one Chinese historian claims Russia came close to dropping an atomic bomb on its upstart neighbor. Communists in Vietnam invaded Cambodia to depose Pol Pot's Socialist regime and restore democracy. Around the same time, as Time notes, Vietnam and China also went to war, killing around 50,000 in six weeks. You know what they say, with friends like this…