DIEN

Set to 3 different clues across 3 published puzzles, most often “___ Bien Phu, Vietnam” — The New York Times, Sunday, 2 December 2007.

4 letters

Every clue on record, most used first

___ Bien Phu, Vietnamonce
The New York Times — Sunday, 2 December 2007
___Bien Phu, Vietnamonce
The New York Times — Wednesday, 17 April 1996
_____ Bien Phu (1954 battle site)once
The New York Times — Tuesday, 2 August 1994