World War Three was the largest war in human history, except possibly for the Unity wars. It pitted the Communist Bloc, lead by the USSR, China and Eastern Europe countries, against the Capitalist Bloc, led by the US and NATO nations. It started because of many minor incidents, giving the Communists an excuse to enact their "world conquest". The war lasted over eight years, and ended in a stalemate and the collapse of many governments around the world due to revolutions, economic collapse and riots.