Possible Clues:

• Lat. and Ukr., formerly
• The Baltics, once: Abbr.
• The Baltics, once: Abbr
• Cold war gp.
• Old geopolitical states: Abbr
• Armenia and Georgia, once: Abbr.
• Former political divs.
• Much of E. Europe, once
• Ukr. and Lith., once (Abbr.)
• Much of Eastern Eur., once