Confectionery tycoon Petro Poroshenko emerged as the leading candidate in Ukraine's presidential race amid mounting tensions about the thousands of Russian troops assembled on the country's borders.
May 25, 2014 Presidential Election
Wall Street Journal: Poroshenko emerges as front-runner for Ukrainian president
Ukrainian political leaders Vitali Klitschko and Arseniy Yatseniuk flank Petro Poroshekno as he shakes hands with U.S. Secretary of State John Kerry.
