Gp. whose alphabet includes Romeo and Juliett (4)

I believe the answer is:

nato

(Other definitions for nato that I've seen before include "Military organization" , "Atlantic alliance (abbr.)" , "Military/political alliance" , "Security agreement" , "Western mil. alliance" .)

I've seen this clue in the LA Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.