The Pale of Settlement was the Western region of Imperial Russia to which Jews were restricted by the Tsarist Ukase of 1792. It consisted of the territories of former Polish–Lithuanian Commonwealth, annexed with the existing numerous Jewish population, and the Crimea (which was later cut out from the Pale). During 1881–1884, 1903–1906 and 1914–1921, waves of antisemitic pogroms swept Russian Jewish communities. At least some pogroms are believed to have been organized or supported by the Russian Okhrana. Although there is no hard evidence for this, the Russian police and army generally displayed indifference to the pogroms, for instance during the three-day First Kishinev pogrom of 1903.