see more
Petro Poroshenko, billionaire and Ukraine's president, gestures as he speaks during a Bloomberg Television interview on the opening day of the World Economic Forum (WEF) in Davos, Switzerland, on Wednesday, Jan. 21, 2015. World leaders, influential executives, bankers and policy makers attend the 45th annual meeting of the World Economic Forum in Davos from Jan. 21-24. Photographer: Simon Dawson/Bloomberg via Getty Images