DONETSK, UKRAINE - OCTOBER 20: A view of the Donbass Arena, the stadium hosts FC Shakhtar Donetsk matches, after an explosion in Donetsk, the city which is under control of the pro-Russian separatist, Ukraine, on October 20, 2014. Windows of the houses and the Donbass Arena, the stadium hosts FC Shakhtar Donetsk matches, were smashed following a blast occurred at a rubber processing factory full of chemicals in Donetsk, east of Ukraine. (Photo by Alexander Ermochenko/Anadolu Agency/Getty Images)