Political instability meant that the OSR was not recognized by any other government, including Russian Bolsheviks, during its brief existence. The Republic failed to stop the Romanian occupation of Bessarabia, a region to which it laid claim. It ceased to exist altogether when it was sacked by German and Austro-Hungarian troops on 13 March 1918, two months after its creation, following the Treaty of Brest-Litovsk between the Central Powers, Ukrainian People's Republic and Petrograd Sovnarkom.