NATO and The Warsaw Pact

NATO (North Atlantic Treaty Organization) was formed by the countries that opposed communism and were on the west side of the iron curtain from West Berlin and any country west of that in Europe, also U.S. and Canada. It was an alliance of those countries to help each other in case of a military conflict. Same exact thing for the Warsaw Pact it was just an alliance of communist countries under the influence  of the Soviet Union. Two groups of countries working against each other just because they believe in a different political systems.