USSR

Wed, 29 Oct '25

Old map inits.

Tue, 29 Jul '25

Bygone world power, for short

Thu, 10 Jul '25

See 36-Across

Sun, 9 Mar '25

It once shared a land border with 16 countries

Wed, 27 Nov '24

Home to Leningrad, for short

Fri, 1 Nov '24

Locale of a 1991 coup attempt by the Gang of Eight, in brief

Sat, 3 Aug '24

Old map letters

Fri, 19 Apr '24

Locale in a Beatles song

Tue, 19 Mar '24

Cold War power, for short

Wed, 31 Jan '24

It's written as "C.C.C.P." in Cyrillic

Thu, 2 Nov '23

Grp. that launched 41-Across

Sun, 15 Oct '23

Former governor of Georgia?

Mon, 21 Aug '23

It broke up on Dec. 26, 1991

Thu, 29 Jun '23

One-sixth of the world's ground surface until 1991, in brief

Thu, 6 Apr '23

Old org. for Armenia

Thu, 9 Feb '23

U.N. member until 1991

Tue, 20 Dec '22

Cold War power, in brief

Sun, 9 Oct '22

Map inits. until 1991

Sun, 14 Aug '22

Old map inits.

Wed, 29 Jun '22

Geographical inits. until 1991

Fri, 1 Apr '22

Federation formed in 1922, for short

Wed, 9 Mar '22

Losing team in the "Miracle on Ice" hockey game

Fri, 18 Feb '22

Red states, once, in brief

Tue, 16 Nov '21

Leningrad's land, for short

Sat, 7 Aug '21

It raised a major red flag

Thu, 29 Jul '21

Founding member of the U.N. Security Council

Sat, 17 Jul '21

Name in a noted '90s breakup