Clue: Soviet inits.

Answer: SSR

Length: 3

---

Similar Clues:

• White House inits.: 1945–53 (HST with 3 letters)
• Former Soviet station (MIR with 3 letters)
• Inits. in movie lore (RKO with 3 letters)
• Arms race inits. (SDI with 3 letters)
• Toothpaste tube inits. (ADA with 3 letters)
• Cable inits. for a cinephile (TCM with 3 letters)
• Initials on Soviet rockets (CCCP with 4 letters)
• Designer inits. (YSL with 3 letters)
• Big inits. in Detroit (e.g. GMC with 3 letters)
• Trip inits. (LSD with 3 letters)