North Atlantic Treaty Organization is an internatinal military defance pact formed with a signature on April 4th 1949 against the Soviet expansionalism. Participants of NATO are obligated to defend any nation in organisation unless there is peace in the world.

  The first aim is solving political crises with diplomacy and saving the situation of peace. It is an allied power on it’s own. Organisation has navy, ground army and air force which is controlled by participants in order.

  Pact expanded through Eastern Europe and scandinavia after the dissolution of warsaw pact and also soviet union, hence the communist threat disappeared with union.

  Within years, organisation adopted anti terorism policy. And now it is using the power like world’s constabulary.