To its northeast Ukraine established a preliminary demarcation line with the Russian SFSR, on the east it had a border with the Don Republic, to its south were the Black Sea and the Sea of Azov, while the Crimean peninsula—the Crimean Regional Government—came under the control of Sulkevych. To the southwest along the Dniester lay a border with the Kingdom of Romania, to the west Ukraine bordered the German Empire and Austria-Hungary. To the north were the German-occupied territories of Ober Ost and the Belarusian People's Republic.