Presidential candidate, former Ukrainian Prime Minister Yulia Tymoshenko speaks during her press conference in Kiev on February 22, 2019. - The polls show Tymoshenko as one of the frontrunner for the country's top political post. Tymoshenko has been a leading figure on the Ukrainian political scene for the last two decades, coming to international prominence through her role in the 2004 Orange Revolution. (Photo by Sergei SUPINSKY / AFP)