Sergii Leshchenko: Ukrainians saw Paul Manafort's political impact up close - and it wasn't pretty

Paul Manafort, Donald Trump's campaign chairman, has only recently become familiar to Americans. But in Ukraine, Manafort has played a decisive role in politics for nearly a decade - one that is being closely scrutinized after his name has appeared in documents that are being examined in a corruption investigation. That is why on Friday, I helped to make public more documents related to Manafort's dealings with the Party of Regions, which he used to consult for.