NATO

Military alliance, created 1949 (4)

Solution has appeared in 2 crosswords (1 across and 1 down):

• Quick crossword No 16,388 — 2022-11-15 00:00:07
  22D: Military alliance with headquarters in Belgium (4)
• Quick crossword No 16,046 — 2021-10-10 23:00:15
  8A: Military alliance, created 1949 (4)