Of all the former Soviet states, Ukraine will likely see the greatest fallout from the Panama Papers, which allege that President Petro Poroshenko holds accounts offshore. In response to the revelations, Ukrainian politicians are already calling for an investigation into Poroshenko’s hidden funds. The head of the Radical Party has even pushed for the president’s impeachment. But Ukraine’s Office of the Prosecutor General said the papers contain no evidence that Poroshenko committed any crimes. For his part, Poroshenko has gone on the defensive. In a string of tweets, the president called himself the first of Ukraine’s leaders to take corruption seriously. At the same time, he has skirted the issue of his culpability, claiming that he handed management of his assets over to a consulting firm upon taking office.