Related Clues:

• See 1-Across
• Former Mideast merger: Abbr.
• Old geographical inits.
• Former Union member: Abbr.
• Communist land, once: Abbr.
• Former Mideast inits.
• Old Mideast inits.
• Bygone geographical inits.
• One of 15, formerly: Abbr.
• 'Olympia' painter
• See 23-Across
• Abbr. on old maps
• See 4-Down
• Armenia or Azerbaijan, once: Abbr.
• Abbr. on old Asian maps