Pro-Russians ride on a truck in Donetsk, Ukraine, Sunday, May 25, 2014. A convoy of an armored personnel carrier and seven trucks carrying several hundred heavily armed men drove through central Donetsk early Sunday afternoon and gunmen got out of the trucks, stood to attention and gave shots in the air in jubilation as a crowd of several thousand supporters cheered them and chanted: "Heroes!". Ukraine's critical presidential election got underway Sunday under the wary scrutiny of a world eager for stability in a country rocked by a deadly uprising in the east. (AP Photo/Vadim Ghirda)