Ukraine President Petro Poroshenko, left, welcomes Lithuanian Foreign Minister Linas Antanas Linkevicius, second left, Poland Foreign Minister Jacek Czaputowicz and Estonian Foreign Minister Sven Mikser, right, ahead of their meeting in Kiev, Ukraine, late Tuesday Jan. 15, 2019. (Mykhailo Markiv, Presidential Press Service Pool Photo via AP)

Ukraine President Petro Poroshenko, left, welcomes President of the Austrian National Council Wolfgang Sobotka, during their meeting in Kiev, Ukraine, Tuesday Jan. 15, 2019. (Mykhailo Markiv, Presidential Press Service Pool Photo via AP)