In the latest in a spate of violations, a Turkish corvette participating in an international exercise in the Aegean early on Wednesday entered Greek national waters off the islands of Kea and Kythnos. The corvette was immediately chased off by a Greek navy frigate, defense officials said. It was the eighth such incident this year and followed a series of radar warnings sent by Turkish authorities to Greek and international aircraft participating in anti-immigration patrols in the eastern Aegean organized by Frontex, the European Union’s border monitoring agency. Speaking from the northern city of Kavala, Deputy Prime Minister Theodoros Pangalos attributed the spike in Turkey’s aggressive tactics to mounting domestic pressures in the neighboring country and said a calm but alert stance was necessary. «It does not help to blow things out of proportion but neither should we ignore the developments,» Pangalos said.