Both the Democratic and Republican Parties would support the idea that the United States should defend itself both in times of war and when it feels as though it's being threatened, since both parties believe deeply in national security.
I think there were 3,000 union casualties.
Answer: The major similarity, then, is that both of these were organizations meant mainly to defend one side against the other. A major difference was that the Warsaw Pact was also created as a way for the Soviet Union to maintain some amount of control over the rest of its bloc. The pact was created soon after Stalin died.
Stalin supported the philosophy of communism, while Mussolini supported the philosophy of fascism.