North Atlantic Treaty Organization


DATE NATION
24 august 1949 United Kingdom
France
Belgium
Netherlands
Luxemburg
Norway
Denmark
Iceland
Portugal
Italy
U.S.A.
Canada
18 february 1952 Greece
Turkey
5 may 1955 Germany
30 may 1982 Spain
12 march 1999 Poland
Czech Republic
Hungary
1 may 2004 Bulgaria
Estonia
Latvia
Lithuania
Romania
Slovenia
Slovaquie
3 april 2008 Albania
Croatia
5 june 2017 Montenegro
7 february 2019 North Macedonia
4 april 2023 Finland
24 october 2023 Sweden

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