Historical abbreviation for ソビエト連邦. Used in contexts referring to the former Soviet Union.
See also: ソビエト連邦
The Soviet Union collapsed in 1991.
During the Cold War, the US and the USSR were in conflict.
ソ連 is the common, everyday abbreviation for the country's name, while ソビエト連邦 is the full, formal name used in official or historical writing.
Standard abbreviation for ソビエト連邦 (Soviet Union).
Ateji spelling; rarely used.
Abbreviation of ソビエト連邦 (Soviet Union), from Russian 'Sovetskiy Soyuz'.