N.A.T.O is abbreviation for the North Atlantic Treaty Organisation witch was found in 1952. Its headquarters in Paris. First Secretary General was Lord Ismay.
N.A.T.O come into start to implement the North Atlantic Treaty of 1949. N.A.T.O had sought to establish a military counterweight to a powerful Soviet military presence in Europe.
N.A.T.O was formed, Because the western countries felt that the U.N's Security Council not sufficiently powerful to protect the peace and power in the world. After the 2nd world war, Soviet Union and the Eastern European countries felt that western Germany and Japan, with aggressive policies to secure world economy for their goods, might again create in to huge military powers.
soon it felt by both Eastern and western that, because of political differences, the damage to world peace come from inside the alliance, not from the defeated enemies. Some countries, therefore United to form the Warsaw Pact, witch guaranteed a united action by all members if any member was attacked by the western countries.