med4Demetrios Tsailas (ret Admiral)
(He has taught for many years, operational planning, strategy, and security, to senior officers at the Supreme Joint War College. He is a member and researcher of the Institute for National and International Security)

Copyright: @ 2025 Research Institute for European and American Studies (www.rieas.gr) Publication date: 23 November 2025

Note: The article reflects the opinion of the author and not necessarily the views of the Research Institute for European and American Studies

Abstract

“Old Theatres – New Challenges,” captures with precision the transformation we are witnessing across the maritime domain. Historic basins of maritime activity—from the Atlantic and Indian Oceans to the Greater Mediterranean—are confronted with new covers of complexity: technological acceleration, evolving security norms, pressure on critical infrastructure, and the rise of non-traditional threats that shape the boundaries between peace, competition, and conflict... Read more

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