FILE - Ukrainian President Petro Poroshenko, right, gestures speaking to French President Emmanuel Macron at the Elysee Palace, in Paris, June 26, 2017. A peace agreement for eastern Ukraine has remained stalled for years, but it has come into the spotlight again amid a Russian military buildup near Ukraine that has fueled invasion fears. On Thursday, Feb. 10, 2022 presidential advisers from Russia, Ukraine, France and Germany are set to meet in Berlin to discuss ways of implementing the deal that was signed in the Belarusian capital of Minsk in 2015. (AP Photo/Michel Euler, File)