| Answer | Crossword Clue |
|---|---|
| SSR | Soviet Union member: Abbr. |
| SSR | Soviet Union division: Abbr. |
| ASSR | Soviet member: Abbr. |
| SSR | Bygone union member: Abbr. |
| SSR | Former Union member (abbr.) |
| SSR | Old union member: Abbr. |
| SWE | European Union member: Abbr. |
| SSR | Former Union member: Abbr. |
| SSR | Member of an old union: Abbr. |
| TERR | Union member of the future: Abbr. |
