28th Congress of the Communist Party of the Soviet Union
The 28th Congress of the CPSU (July 2, 1990 – July 13, 1990) was held in Moscow. It was held a year ahead of the traditional schedule and turned out to be the last Congress of the Communist Party of the Soviet Union (CPSU) in the history of the party. Notably, this congress displayed open factionalism: opposing views were championed by the centrist "CPSU Central Committee platform" (supported by Gorbachev), the liberal "Democratic Platform" (which included Boris Yeltsin) and the conservative "Marxist Platform".