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NATO - Six Colours: War in cyberspace

The North Atlantic Treaty Organization or NATO (pronounced /ˈneɪtoʊ/ NAY-tohFrenchOrganisation du traité de l'Atlantique Nord(OTAN)), also called the (North) Atlantic Alliance, is an intergovernmental military alliance based on the North Atlantic Treaty which was signed on 4 April 1949. The NATO headquarters are in BrusselsBelgium,[3] and the organization constitutes a system of collective defence whereby its member states agree to mutual defense in response to an attack by any external party.

from Wikipedia