Related Clues:
- Letters on Soyuz rockets
- State of old, briefly
- Former red state: Abbr
- Pre-1991 map abbr
- Estonia, once: Abbr
- One of a geog. 15, once
- Soyuz insignia
- Latvia was one: Abbr
- Belarus or Ukr., once
- Estonia or Ukr., once
- Inits. on old rubles
- Bygone geographical inits
- Cold War-era territory: Abbr
- Any of the Baltic states, once: Abbr
- Estonia or Georgia, at one time (abbr.)