Pridnestrovie (Moldavian: Нистрения, Nistrenia; Russian: Приднестровье, Pridnestrovye; Ukrainian: Придністров'я, Prydnistrovya), officially known as the Pridnestrovian Moldavian Republic (P.M.R.) and often referred to in English as Transnistria, is a republic of the Soviet Union. Pridnestrovie referred to the regions of the former Moldavian Soviet Socialist Republic that laid east of the Dniester River. The republic declared their separation from Moldavia on September 2, 1990, as the unrecognized Pridnestrovian Moldavian Soviet Socialist Republic (PMSSR).
It wouldn't be until Romania launches an attack on the break-away region that the Soviet Union would grow more support for the region. The USSR would send both troops and volunteers to the region in March 1992. Within weeks, Soviet-backed PMR troops officially took control of all regions east of the river, as well as the city of Bender and several regions west of the river. A ceasefire would be declared in July 1992. In August, Pridnestrovie would be allowed admission into the Soviet Union, which was finalized on August 30.
The region is the second smallest republic of the USSR (after Estonia), and has one of the lowest populations. The region has experienced a population increase during the late 1990s, and has an active industrialized economy. Many refer to the PMR as the "east Moldova," due to it continuing to retain a large Moldavian-Romanian population, as well as continuing to use a variant flag of the Union flag of Moldova. While relations with neighboring Romania have become friendlier, debates on the language have continued to strain some border relations. Moldavian retains official status in the PMR, while across the river, the Moldavians recognize the language as simply a dialect of Romanian (or the Romanian language written in Cyrillic).