 The December elections of Stepan Topal and Igor Smirnov as presidents of Gagauzia and Transnistria respectively, and the official dissolution of the Soviet Union at the end of the year, had further increased tensions in Moldova.Transnistria is the region east of the Dniester River, which includes a large proportion of predominantly Russophone ethnic Russians and Ukrainians (51%, as of 1989, with ethnic Moldovans forming a 40% minority).The headquarters of the Soviet 14th Guards Army was located in the regional capital Tiraspol.