Ο Νικόλαος Τζιφάκης είναι Κάτοχος Έδρας Jean Monnet στις «Εξωτερικές Πολιτικές της Ευρωπαϊκής Ένωσης και τα Δυτικά Βαλκάνια» και Καθηγητής Διεθνών Σχέσεων στο Τμήμα Πολιτικής Επιστήμης και Διεθνών Σχέσεων του Πανεπιστημίου Πελοποννήσου. Τα ερευνητικά του ενδιαφέροντα περιλαμβάνουν τη θεωρία διεθνών σχέσεων, τις εξωτερικές πολιτικές της Ευρωπαϊκής Ένωσης και τις σύγχρονες διεθνοπολιτικές εξελίξεις στην περιοχή των Δυτικών Βαλκανίων. Είναι συγγραφέας δεκάδων πρωτότυπων μελετών οι οποίες έχουν δημοσιευθεί στην Ελλάδα και κυρίως στο εξωτερικό. Άρθρα του έχουν μεταξύ άλλων δημοσιευθεί σε έγκριτα διεθνή επιστημονικά περιοδικά όπως: Cambridge Review of International Affairs, Conflict, Security & Development, Ethnopolitics, European Foreign Affairs Review, Global Society, International Journal, Journal of International Development, Journal of Southern Europe and the Balkans, Perspectives on European Politics and Society, Problems of Post-Communism, Southeastern Europe, Southeast European and Black Sea Studies και Voluntas. Το 2008, του απονεμήθηκε το Marcel Cadieux Distinguished Writing Award για το άρθρο που συνέγραψε με τον καθηγητή Αστέρη Χουλιάρα και δημοσιεύτηκε στη διεθνή επιστημονική επιθεώρηση International Journal που εκδίδεται από το Canadian International Council.

Θεωρία διεθνών σχέσεων, οι εξωτερικές σχέσεις της Ευρωπαϊκής Ένωσης, και οι σύγχρονες διεθνοπολιτικές εξελίξεις στην περιοχή των Δυτικών Βαλκανίων.

• Tzifakis, N. & Vasdoka, E. “A Strategic-Relational Approach to EU Enlargement: The Reversed Conditionality of Western Balkan Governing Elites”, Comparative Southeast European Studies, Vol. 73, No. 4, 2025, pp. 475-502, https://doi.org/10.1515/soeu-2025-0035 [De Gruyter Brill, SSCI, Q1].  

• Tzifakis, N. “Three decades of international peacebuilding: Lessons learned in BiH”, Südosteuropa Mitteilungen, Vol. 65, No. 6, 2025, pp. 35-46, https://www.ceeol.com/search/article-detail?id=1389506. 

• Κλάψης, Α. & Τζιφάκης, Ν. (επιμ.), Ο Εξευρωπαϊσμός της Ελληνικής Εξωτερικής Πολιτικής. Αθήνα: Konrad Adenauer Stiftung, 2025, σελ. 305, ISBN 978-618-88130-0-7, https://doi.org/10.5281/zenodo.17235118. 

• Tzifakis, N. & Vasdoka, E. “Great Powers and Gatekeepers in the Western Balkans: Serbia's Strategic Hedging”, Studia Europejskie – Studies in European Affairs, Vol. 29, No. 1, 2025, pp. 287-309, https://doi.org/10.33067/SE.1.2025.15. 

• Κοππά, Μ. & Τζιφάκης, Ν., Ο Εξευρωπαϊσμός των Δυτικών Βαλκανίων. Ακαδημαϊκά Συγγράμματα Κάλλιπος, 2024, σελ. 368, ISBN: 978-618-228-181-9, http://dx.doi.org/10.57713/kallipos-415.

• Panagiotou, R. & Tzifakis, N. Deciphering the Greek Economic Diplomacy towards the Western Balkans: Actors, Processes, Challenges, London School of Economics and Political Science, European Institute, Hellenic Observatory, GreeSE Paper No. 169, March 2022, pp. 101, https://www.lse.ac.uk/Hellenic-Observatory/Assets/Documents/Publications/GreeSE-Papers/GreeSE-169.pdf.

• Boura, S., Vathis, O., Huliaras, A. & Tzifakis, N. “Do in-kind donations promote cooperation among NGOs? Lessons from the Greek refugee crisis”, Journal of International Development, Vol. 34, No. 1, January 2022, pp. 130-144, https://doi.org/10.1002/jid.3585 [Wiley, SSCI, Q2].

• Tzifakis, N. “Hostile Division and Territorial Jurisdiction: Kosovo's Independence”, in Kevin W. Gray, (ed.), Global Encyclopedia of Territorial Rights, Cham: Springer, 2022, pp. 1-14, https://doi.org/10.1007/978-3-319-68846-6_271-1.

• Tzifakis, N. “EU Enlargement towards the Western Balkans and Greece: The European versus National Preferences Nexus”, in A. Klapsis (ed.), Greece and the EU: 40 years of membership, Utrecht: Eburon, 2022, pp. 123-138.

• Tzifakis, N. “The Geopolitics of Pandemic-related Assistance to the Western Balkans”, IEMED Mediterranean Yearbook 2021, Barcelona: European Institute for the Mediterranean, 2021, pp. 177-180, https://www.iemed.org/wp-content/uploads/2021/08/Geopolitics-Pandemic-related-Assistance-Western-Balkans_MedYearbook2021.pdf.

• Petrovic, M. & Tzifakis, N. “The Geopolitical Turn of EU Enlargement: An Introduction”, Journal of Contemporary European Studies, Vol. 29, No. 2, 2021, pp. 157-168, https://doi.org/10.1080/14782804.2021.1891028 [Routledge, SSCI, Q1].

• Panagiotou, R. & Tzifakis, N. “Do Small Powers Retrench? Greece in the Western Balkans during the era of SYRIZA governance”, Southeastern Europe, Vol. 45, No. 1, 2021, pp. 64-92, https://doi.org/10.30965/18763332-45010005 [Brill, Q1].

• Tzifakis, N. & Prelec, T. “From mask to vaccine diplomacy: Geopolitical competition in the Western Balkans”, in G. Fruscione, (ed.) Pandemic in the Balkans: Geopolitics and Democracy at Stake, Milan: Ledizioni LediPublishing, Italian Institute for International Political Studies (ISPI), 2021, pp. 12-33, https://www.ispionline.it/sites/default/files/ispireport_the_pandemic_in_the_balkans_2021.pdf.

• Bieber, F. & Tzifakis, N. (eds), The Western Balkans in the World: Linkages and Relations with Non-Western Countries, Oxon: Routledge, 2020, pp. 271, https://doi.org/10.4324/9780429243349.

• Tzifakis, N. “The Western Balkans during the Pandemic: Democracy and rule of law in quarantine?”, European View, Vol. 19, No.  2, Autumn 2020, pp. 197-205, https://doi.org/10.1177/1781685820963333 [SAGE].

• Fakiolas, E. T. & Tzifakis, N. “Human security in EU strategy: reflecting on the experience of EUPM in Bosnia and Herzegovina and EULEX in Kosovo”, Journal of Contemporary European Studies, Vol. 27, No. 3, 2019, pp. 303-316, https://doi.org/10.1080/14782804.2019.1614434 [Routledge, SSCI, Q1].

• Tzifakis, N., Petropoulos, S. & Huliaras, A. “The Impact of Economic Crises on NGOs: The Case of Greece”, Voluntas: International Journal of Voluntary and Nonprofit Organizations, Vol. 28, No. 5, October 2017, pp. 2176-2199, https://link.springer.com/content/pdf/10.1007/s11266-017-9851-3.pdf [Springer, SSCI, Q1].

• Γκόφας, Ν. & Τζιφάκης, Ν., Θεωρητικές Προβολές στη Διεθνή Πολιτική: Η Σινο-αμερικανική Πρόκληση, Αθήνα: Εκδόσεις Πεδίο, 2017, σελ. 182, ISBN: 978-960-546-903-0.

• Fakiolas, E. T. & Tzifakis, N. “Establishing the Rule of Law in Kosovo and Bosnia and Herzegovina: The Contribution of the EU Civilian Missions”, in M. S. Fish, G. Gill and M. Petrovic, (eds) A Quarter Century of Postcommunism Assessed, Cham: Palgrave Macmillan, 2017, pp. 187-216, https://link.springer.com/chapter/10.1007/978-3-319-43437-7_8.

• Tzifakis, N. & Huliaras, A. “The Perils of Outsourcing Post-Conflict Reconstruction: Donor Countries, International NGOs and Private Military and Security Companies”, Conflict, Security and Development, Vol. 15, No. 1, March 2015, 51-73, https://doi.org/10.1080/14678802.2015.1008218 [Routledge, Q1].

• Huliaras, A. & Tzifakis, N. “Hegemonic Relationships: Donor Countries and NGOs in Western Balkan post-conflict reconstruction”, Southeastern Europe, Vol. 37, No. 3, 2013, pp. 312-329, https://doi.org/10.1163/18763332-03703004 [Brill, Q1].

• Tzifakis, N. “The European Union in Kosovo: Reflecting on the Credibility and Efficiency Deficit”, Problems of Post-Communism, Vol. 60, No. 1, January/February 2013, pp. 43-54, https://doi.org/10.2753/PPC1075-8216600104 [M.E. Sharpe, SSCI, Q1].

• Sklias, P. & Tzifakis, N. (eds), Greece’s Horizons: Reflecting on the country’s assets and capabilities, Heidelberg: Springer, 2013, pp. 276, https://link.springer.com/content/pdf/10.1007/978-3-642-34534-0.pdf.

• Tzifakis, N. “Post-Conflict Economic Reconstruction”, in W. F. Danspeckgruber, (ed.), Encyclopedia Princetoniensis: The Princeton Encyclopedia of Self-Determination, Princeton: Princeton University, Liechtenstein Institute on Self-Determination, 2013, https://pesd.princeton.edu/node/586.

• Tzifakis, N. “Economic Motivations for Armed Conflict”, in W. F. Danspeckgruber, (ed.), Encyclopedia Princetoniensis: The Princeton Encyclopedia of Self-Determination, Princeton: Princeton University, Liechtenstein Institute on Self-Determination, 2013, https://pesd.princeton.edu/node/386.

• Huliaras, A. & Tzifakis, N. “The Fallacy of the Autonomous Celebrity Activist in International Politics: George Clooney and Mia Farrow in Darfur”, Cambridge Review of International Affairs, Vol. 25, No. 3, September 2012, pp. 417-431, https://doi.org/10.1080/09557571.2012.710591 [Routledge, SSCI, Q1].

• Tzifakis, N. “Bosnia’s slow Europeanisation”, Perspectives on European Politics and Society, Vol. 13, No. 2, June 2012, pp. 131-148, https://doi.org/10.1080/15705854.2012.675649 [Routledge, Q1].

• Tzifakis, N. Contracting out to Private Military and Security Companies, Brussels: Wilfried Martens Centre for European Studies, July 2012, pp. 75, https://www.martenscentre.eu/wp-content/uploads/2020/07/contracting-out-private-and-security-companies.pdf.

• Tzifakis, N. (ed.), International Politics in Times of Change, Heidelberg: Springer, 2012, pp. 334, https://link.springer.com/content/pdf/10.1007/978-3-642-21955-9.pdf.
• Tzifakis, N. “Problematizing Human Security: A General/Contextual Conceptual Approach”, Southeast European and Black Sea Studies, Vol. 11, No. 4, December 2011, pp. 353-368, https://doi.org/10.1080/14683857.2011.632539 [Taylor & Francis, SSCI, Q1].

• Huliaras, A. & Tzifakis, N. “Celebrity Activism in International Relations: In Search of a Framework for Analysis”, Global Society, Vol. 24, No. 2, April 2010, pp. 255-274, https://doi.org/10.1080/13600821003626567 [Routledge, Q2].

• Arvanitopoulos, C. & Tzifakis, N. “Enlargement Governance and the Union’s Integration Capacity”, in C. Arvanitopoulos, (ed.) Turkey’s Accession to the European Union: An Unusual Candidacy, Heidelberg: Springer, 2009, pp. 9-19, https://link.springer.com/chapter/10.1007/978-3-540-88197-1_2.

• Fakiolas, E. T. & Tzifakis, N. “Transformation or Accession? Reflecting on the EU’s Strategy Towards the Western Balkans”, European Foreign Affairs Review, Vol. 13, No. 3, Autumn 2008, pp. 377-398, https://doi.org/10.54648/eerr2008028 [Kluwer].

• Arvanitopoulos, C. & Tzifakis, N. “Implementing Reforms in Bosnia and Herzegovina: The Challenge of the Constitutional Process”, European View, Vol. 7, No. 1, June 2008, pp. 15-22, https://link.springer.com/content/pdf/10.1007/s12290-008-0037-7.pdf [Springer].

• Huliaras, A. & Tzifakis, N. “Contextual Approaches to Human Security: Canada and Japan in the Balkans”, International Journal, Vol. LXII, No. 3, Summer 2007, pp. 559-575, https://journals.sagepub.com/doi/pdf/10.1177/002070200706200307 [SSCI, Q2].

• Tzifakis, N. “The Bosnian Peace Process: The Power-Sharing Approach Revisited”, Perspectives: Review of International Affairs, No. 28, Summer 2007, pp. 85-102, https://www.jstor.org/stable/23616212.
• Tzifakis, N. “EU’s Region-Building and Boundary-Drawing Policies: The European Approach to the Southern Mediterranean and the Western Balkans”, Journal of Southern Europe and the Balkans, Vol. 9, No. 1, April 2007, pp. 47-64, https://doi.org/10.1080/14613190701217001 [Taylor & Francis, SSCI, Q1].

• Tzifakis, N. & Tsardanidis, C. “Economic Reconstruction of Bosnia and Herzegovina: The Lost Decade”, Ethnopolitics, Vol. 5, No. 1, March 2006, pp. 67-84, https://doi.org/10.1080/17449050600576316 [Routledge, Q1].