Tension remained high Tuesday between Greece and Turkey, both of whom have warships in the eastern Mediterranean after Turkey sent a research vessel to carry out seismic research for energy resources in an area Greece says is on its continental shelf. Ankara announced on Monday that its research vessel Oruc Reis and two support vessels would be operating in the Mediterranean Sea between Cyprus and Greece until Aug. 23. The vessel arrived in the area Monday morning, escorted by Turkish warships. Greece slammed the decision as an illegal act that infringed on its sovereign rights, saying the Turkish research vessel...