George Tsukansky was the first Premier of the Republic of Siberia. Tsukansky was presumably exiled to Siberia as a political prisoner in the late 1880s or early 1890s and freed by Mexican troops during the occupation of the Kamchatka Peninsula during the early months of the Great Northern War between the U.S.M. and the Russian Empire. Under Admiral Ephraim Small, the Mexican Administrator of Siberia, a "Provisional Free Russian Government" was established by the freed Russian political prisoners, with Tsukansky as its first Premier. The government of Chief of State Benito Hermión recognized Tsukansky's government as the legitimate authority in Siberia on 23 November 1899. By the time of Hermión's ouster in October 1901, Tsukansky had been succeeded as Premier by Boris Tschakev.
Sobel's source for the political career of George Tsukansky is Michael Suzanov's Siberia Under Mexican Domination: the First Year (London, 1910).