Related Clues:
- International organisation for collective security
- 29-member org
- Mystically obscure
- 6 23 etc to call up among banal and pathetic plays
- Impersonators locked up by military alliance
- Like some old characters
- Alphabet providing the 'ingredients' of this puzzle's soup
- European defence org
- Western defense alliance
- Alliance joined by Montenegro in 2017
- Montenegro joined it in 2017
- Grp. founded by 12 countries
- Jens Stoltenberg is its secy. general
- Atlantic nations' defence org
- North Atlantic Defence org