Related Clues:

• Old atlas abbr.
• Outdated globe letters
• Gorbachev's nation
• Bygone atlas listing
• Bloc that dissolved in 1991
• 20th-cen. superpower
• KGB's home
• Former Communist state
• Lenin's land
• Yalta conf. locale
• Warsaw Treaty Org. member
• Former federation
• One-time superpower
• U.S. ally in W.W. II
• Moscow was its cap.