Donetsk (Ukrainian: Донецьк, translit. Donec'k [dɔˈnɛt͡sʲk]; Russian: Доне́цк, translit. Doneck [dɐˈnʲɛtsk]; former names: Aleksandrovka, Hughesovka, Yuzovka, Stalino (see also: cities' alternative names)) is an industrial city in Ukraine on the Kalmius River. The population was estimated at 929,063 (2016 est.) in the city, and over 2,000,000 in the metropolitan area (2011). According to the 2001 Ukrainian Census, Donetsk was the fifth-largest city in Ukraine. Since April 2014, the city has been controlled by pro-Russian separatists from the self-proclaimed Donetsk People's Republic.