The Pridnestrovian Moldavian Soviet Socialist Republic (PMSSR), also commonly known as Soviet Transnistria or simply known as Transnistria, was created on the eastern periphery of the Moldavian Soviet Socialist Republic (MSSR) in 1990 by pro-Soviet separatists who hoped to remain within the Soviet Union when it became clear that the MSSR would achieve independence from the USSR and possibly unite with Romania. The PMSSR was never recognised as a Soviet republic by the authorities in either Moscow or Chișinău. In 1991, the Pridnestrovian Moldavian Republic succeeded the Pridnestrovian Moldavian Soviet Socialist Republic.