ANKARA, Turkey—A meeting aimed to improve fraught ties between NATO allies Greece and Turkey quickly descended into a tense exchange of accusations between the two countries’ foreign ministers on April 15. Greek Foreign Minister Nikos Dendias traveled to Ankara to discuss ties with his Turkish counterpart Mevlut Cavusoglu, following a slight easing of tensions. Appearing before the cameras to deliver their press statements, the two men initially spoke about keeping the channels of dialogue open and increasing economic cooperation in an effort to improve relations. But their meeting soon turned sour after Dendias accused Turkey of violating Greece’s sovereign rights in the eastern Mediterranean and warned that Ankara would face European Union sanctions if the violations continue. Cavusoglu retorted back calling Dendias’ words “unacceptable.” The two ministers then proceeded to list their grievances. The visit was the first by a Greek minister following a tumultuous year. Angered by what it …