Recent events about the delimitation of the maritime boundary dispute between Turkey and Greek Cypriot Administration have shown that Hellenism policy of Greek Cypriots and their different legal perspectives over international maritime law prevent the viable settlement for rapprochement. As it is known that the importance of Eastern Mediterranean continues, especially after the energy activities and findings in the region, Continental Shelf and Exclusive Economic Zone played a significant role in expanding the sovereign rights over the sea. The research to date has tended to focus on the securitization approach of the Copenhagen School of using new contribution, law sector to explain the problem by showing the domestic and international maritime law provisions with ICJ or Arbitrary Tribunal decisions. The issue of maritime delimitation boundary has been securitized and concluded with the militarization of the region by using energy sector. This study fills the gap of the previous unsearched area.