NATO
was created on April 4, 1949, by means of the North Atlantic Treaty,
aka The Washington Treaty.
The 12 founding member countries were :
Belgium, Canada, Denmark, France, Iceland,
Italy, Luxembourg, Netherlands, Norway, Portugal, United
Kingdom, United States
It
followed:
1952
- Greece, Turkey (Türkiye)
1955
- Germany
1982
- Spain
1999
- Czechia, Hungary, Poland
2004
- Bulgaria, Estonia, Latvia,
Lithuania, Romania, Slovakia,
Slovenia
2009
- Albania, Croatia
2017
- Montenegro
2020
- North Macedonia
2023
- Finland
2024
- Sweden