This study examines Turkey's energy security from the perspective of energy security, based on its geostrategic position and the broader rearrangements in the Eastern Mediterranean. In the context of increasing international interdependence and volatility in energy markets, Ankara is attempting to transform its dependence on hidrokarbon (HC) imports by becoming a regional energy hub. Its geographical location, in close proximity to the energy-rich regions, allows the development of HCs transmission networks linking Asia to Europe. Pipelines run through its territory, reinforcing the country's economic and geopolitical importance. At the same time, Turkey is systematically investing in facilities and infrastructure, seeking to become a regional energy regulator. Ankara is developing intensive exploration and exploitation activities, even in disputed maritime zones of the Eastern Mediterranean. This strategy is accompanied by increased tension with neighbouring states and raises issues of violation of international law. Its aggressive stance is part of a broader revisionist design, where energy serves as a catalyst for regional influence and power. Domestically, Turkey is facing increasing energy demand due to industrial development and demographic trends. Import dependency stands at 60%, exacerbating the need to diversify the energy mix. The country is investing in renewable energy sources and at the same time pursuing the integration of nuclear energy, strengthening its technological and strategic autonomy. The study shows that energy security, both in terms of internal self-sufficiency and external influence, is at the heart of Turkish strategy. Ankara uses energy as a tool for projecting power, forging alliances and rearranging the regional balance. However, linking energy policy with revisionist geopolitical aspirations carries the risk of destabilisation, making the Eastern Mediterranean a field of strategic rivalries.