Aristarchus Grekas is an Archimandrite, a Clergyman of the Holy Archdiocese of Athens. He is also a Doctor of Theology and Assistant Professor at the Theology Department of the Theological School of the National and Kapodistrian University of Athens. He teaches at schools of the Law Enforcement, the Greek Armed Forces, NATO and the UN. He is a graduate of the Arsakeio Pedagogical Academy of Patras and the Pedagogical Department of Primary Education of the National Kapodistrian University of Athens. From the Department of Theology of the Theological School of the Aristotle University of Thessaloniki he received with honors, his Degree, his Postgraduate (MSc) and his Doctoral degree. In the United Kingdom, he received a Master’s Degree (MSc) in International Relations and Government from Durham University, with the thesis: “Preventing Conflicts Sustainable Peace and Security”. He also successfully completed programs at Oxford University and Cambridge University.

In the United States, he successfully completed a graduate program at Georgetown University – School of Foreign Service, and two programs at Harvard University – Kennedy School.

He has wrote seven books and published articles in journals, in Greek and in English, either in theological or international relations issues.