- Headquarter at Brussels while the military headquarter is at Mons, Belgium.
- Secretary General Jens Stoltenberg
- Came into being on April 4, 1949
- Started as “Atlantic Alliance” in 1949 with 12 states (USA, Canada, UK, France, Belgium, Portugal, Norway, Netherlands, Luxembourg, Italy, Iceland, Denmark) as founding members
- Sweden joined most recently on March 7, 2024.