The Ukrainian People's Republic of Soviets was a short-lived (1917–1918) Soviet republic of the Russian SFSR that was created by the declaration of the Kharkiv All-Ukrainian Congress of Soviets "About the self-determination of Ukraine" on 25 December [O.S. 12 December] 1917 in the Noble Assembly building in Kharkov. Headed by the Provisional Workers' and Peasants' Government of Ukraine formed earlier in Russian Kursk. The republic was later united into the Ukrainian Soviet Republic and, eventually, liquidated, because of a cessation of support from the government of the Russian SFSR when the Treaty of Brest-Litovsk was signed.