Dr. Tasos Chatzivasileiou is a Member of Parliament for Serres (Nea Demokratia). He is an Assistant Professor of International Relations and the EU at the Hellenic American University (New Hampshire, USA). He has participated in various research projects in Athens, Brussels, Strasbourg, Istanbul and Nicosia. In the private sector, he has worked as an International Business Development Consultant, specializing in the utilization of European programs and the implementation of business synergies in the Greek and international markets. In addition, he has participated in the writing of books related to International Relations and History. He speaks English, French, Turkish and Spanish. As a Member of Parliament, he has been an active Member of the Parliamentary Assembly of the Council of Europe (PACE), where he was elected at various positions of responsibility. Also, he was rapporteur of PACE for issues related to youth. In December 2019, the Greek Prime Minister and President of Nea Demokratia Kyriakos Mitsotakis appointed him as International Secretary of the party. In 2025, he served as Deputy Minister of Foreign Affairs, responsible for Economic Diplomacy and Extroversion. In May 2025, he was unanimously elected as one of the Vice-Chairmen of the International Democracy Union (IDU), the global alliance of the centre right parties.