Filed from 3 published puzzles

KREMLIN

Set to 3 different clues across 3 published puzzles, most often “Presidential abode” — The New York Times, Friday, 20 April 2007.

7 letters

Every clue on record, most used first

Presidential abodeonce
The New York Times — Friday, 20 April 2007
Czars' burial placeonce
The New York Times — Saturday, 20 July 2002
Cold war headquartersonce
The New York Times — Friday, 12 July 1996