Related Clues:
- Its headquarters are near Constitution Hall
- Grp. whose alphabet starts Alfa, Bravo, Charlie ..
- Lands of the Americas, org
- Defense grp. hosting summits
- Euro defence org
- W. alliance since 1948
- Brussels-based mil. alliance since 1949
- November Alpha Tango Oscar
- Alliance that includes the U.S. and U.K
- Military alliance grp
- Alliance with hdqrs. in Brussels
- Grp. with peacekeeping troops
- Luis Almagro's org
- Grp. whose alphabet ends with "Zulu"
- Partnership for Peace org