The North Atlantic Treaty Organization (NATO), also called the North Atlantic Alliance, is an intergovernmental military alliance between 29 North American and European countries based on the North Atlantic Treaty that was signed on 4 April 1949.NATO constitutes a system of collective defence whereby its independent member states agree to mutual defence in response to an attack by any
81.2-142.7 81.2z"/> Subscribe on YouTubeDMPQ: Write short note on NATO. (IR)