North Atlantic Treaty Organization (NATO)
4 April 1949
to promote mutual defense and cooperation
members - (29) Albania, Belgium, Bulgaria, Canada, Croatia, Czechia, Denmark, Estonia, France, Germany, Greece, Hungary, Iceland, Italy, Latvia, Lithuania, Luxembourg, Montenegro, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Turkey, UK, US © 2000–2025 Unbound Medicine, Inc. All rights reserved