Complex sentence: Russian Social-Democratic Union of Youth (RSDUY; russian: "Российский социал-демократический союз молодёжи") is a Russian non-governmental organization founded in December 2000 with Mikhail Gorbachev's support as a youth branch of the Russian United Social Democratic Party.
Split into simpler sentences: Russian Social-Democratic Union of Youth (RSDUY; russian: "Российский социал-демократический союз молодёжи") is Russian non-governmental organization. RSDUY was founded in December, 2000 with Mikhail Gorbachev's support as a youth branch of Russian United Social Democratic Party.