The Donetsk–Krivoy Rog Soviet Republic was a self-declared Soviet republic of the Russian SFSR founded on 12 February 1918. The republic claimed self-determined territories in treaties of Brest-Litovsk; it was founded three days after the government of Ukraine signed the treaty with Germans, which recognized the borders of Ukrainian People's Republic, within which the Donetsk-Krivoy Rog Soviet Republic was located. On 29 March 1918 it became a republic within Ukrainian Soviet Republic, where it was merged with  Ukrainian People's Republic of Soviets (capital in Kharkiv, founded December 25, 1917) and Odessa Soviet Republic (founded on March 1st, 1918), until the last was fully occupied by the German forces according to treaties of Brest-Litovsk .