In this thesis, the exclusive economic zones in the Eastern Mediterranean are analyzed and the present problem of the demarcation of the borders of the sea area between the countries of the region is described. Historical facts are stated and the vital problems of the Eastern Mediterranean; the basis of the region's complex geopolitical picture and political disagreements, are explained. The first part of the paper describes the legal basis of the international law of the sea, according to which the delimitation of sea zones in the region should be carried out. In the central part, political events in the region are analyzed, the aspirations of individual countries are stated and bilateral cooperation between the countries of the region is described, the result of which is the determination of borders at sea. It also describes the reasons why the region is attracting more and more attention from global actors, namely the discoveries of energy reserves and natural gas reserves. The discovery of gas in the region led to the setting of ambitious goals by the countries of the region, the creation of political alliances and the planning of energy projects. In the last part, possible solutions to maritime disputes are presented and the course of resolving the long-standing maritime dispute between the two states of the region, Israel and Lebanon, is described.