- The North Atlantic Treaty Organization is an intergovernmental military alliance based on the North Atlantic Treaty which was signed on 4 April 1949.
- The NATO headquarters are in Brussels, Belgium
- After the fall of the Berlin Wall in 1989, the organization became drawn into the Breakup of Yugoslavia in the 1990s which resulted in NATO's first military operations in Bosnia from 1991 to 1995 and later Yugoslavia in 1999.
