Ukraine's presidential candidates hold debate ahead of election runoff

A man holding a scarf with the word meaning "Ukraine" is seen during a debate at the Olympic stadium in Kiev, Ukraine, April 19, 2019. Ukraine's incumbent President and presidential candidate Petro Poroshenko and presidential candidate and actor Volodymyr Zelensky on Friday held a debate ahead of the second round of the country's presidential election. (Xinhua/Sergey)