<P> The North Atlantic Treaty Organization ( NATO / ˈneɪtoʊ / ; French : Organisation du Traité de l'Atlantique Nord ; OTAN ) , also called the North Atlantic Alliance , is an intergovernmental military alliance between 29 North American and European countries . The organization implements 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 external party . NATO 's Headquarters are located in Haren , Brussels , Belgium , while the headquarters of Allied Command Operations is near Mons , Belgium . </P>
<P> The North Atlantic Treaty Organization ( NATO / ˈneɪtoʊ / ; French : Organisation du Traité de l'Atlantique Nord ; OTAN ) , also called the North Atlantic Alliance , is an intergovernmental military alliance between 29 North American and European countries . The organization implements 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 external party . NATO 's Headquarters are located in Haren , Brussels , Belgium , while the headquarters of Allied Command Operations is near Mons , Belgium . </P>
which alliance was formed as a reaction to the north atlantic treaty organization ( nato )
which alliance was formed as a reaction to the north atlantic treaty organization ( nato )
North Atlantic Alliance
North Atlantic Alliance