Ukraine's new President Volodymyr Zelensky (C) answers questions from an AFP journalist as he walks along a street following a visit to the IX International Book Festival "Book Arsenal" in Kiev on May 23, 2019. - Ukraine's new president Volodymyr Zelensky came under fire just days after taking office, over key hiring decisions including appointing a chief of staff with links to a controversial oligarch. (Photo by Sergei SUPINSKY / AFP)