The United States and the Soviet Union were the two global super powers, and they had both differences and similarities.
Similarities:
- Both had expansionist ambitions;
 - Both were trying to spread out their influence in all parts of the world;
 - Both were intensely developing their military and technology;
 - Both formed military organization, NATO and the Warsaw Pact, in order to protect their interests;
 
Differences:
- USA was mostly capitalist politics, while the USSR had communist politics;
 - USA was striding towards multiculturalism, while the USSR had an ongoing ethnic cleansing;
 - USA was a democracy, while the USSR was an autocracy;