The government of the Ukrainian People's Republic (UPR), with mounting attacks on its territory since early 1919, had lost control over most of Ukraine, which was controlled by several disparate powers: Denikin's Whites, the Red Army and pro-Soviet formations, the Makhnovist Partisan Army claiming significant territory, the Kingdom of Romania in the southwest, Poland, and various bands lacking any political ideology. The city of Kiev had undergone numerous recent changes of government. The Ukrainian People's Republic was established in 1917; a Bolshevik uprising was suppressed in January 1918. The Red Army took it in February 1918, followed by the Army of the German Empire in March; Ukrainian forces retook the city in December. During February 1919 the Red Army regained control; in August it was taken first by Symon Petlura's men and then by Denikin's army. The Soviets regained control in December 1919.