EU energy security and as an energy corridor Turkey's place on it

The European society, which has emerged in the context of energy since it was created in the 1940s, has taken many steps to provide its energy to be secured. This steps have been affecting both the relations between the member states in the integration and their relations with the countries outside the European integration. In this study, it has been explained the steps of EU's to ensure its energy security based on the historical crises on energy of European integration. Beside of this, study tries to explain how is the context of energy security changed in time. The important dimensions and parameters of energy security have been discussed to explain EU's energy policy transformation. Turkey, due to its geostrategic location, has an important part on EU energy policies and EU's relations with the source countries. The relations between EU and Turkey in the energy context were examined within the framework of "Interdependence" which put forward by Joseph S. Nye ve Robert O. Keohane in the1970s. At this point, there are a cost in the relations of two actors both economically and politically. Starting from this view, it has been specified the cost of this relation, and to be given suggestions on it.