During the Second World War and in the interwar period, the Dniester river became a natural border, a state border and a dividing line between two worlds. The Dniester river was one of the most important lines of communication for Bessarabia, which was necessary for the economic development. While for the most of Transdniester‘s citizens it was a barrier that they wanted to pass and run from Communist regime. The Bolshevik agents crossed the river to the right bank because they wanted to destabilize the internal situation and to create diversions in order to “export the proletarian revolution” to Romania. That is why the Dniester border was the most guarded border in the epoch. In 1940, through the union of the two banks of the Dniester river, the leadership from Kremlin create the Moldavian Soviet Socialist Republic. In the following year, the Romanian army, together with the German troops crossed the river in order to liquidate the Soviet regime. In 1944, the two banks of the river were unified through the reestablishment of the Moldavian Soviet Socialist Republic. That situation remained till 1990, when the transdniester separatist tendencies were activated. Their mission was to prevent the reunion of the Bessarabia with Romania and the river Dniester became the border between two worlds