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Kazunari Sakai, Olivier Chopin. Diversification of Security and Possibilities for “Cultural Security”: Focusing on the Cases of the EU and France. International Relations and Diplomacy. 2021. 9. 8. 321-334
Significance of the Japan-EU Strategic Partnership Agreement (SPA) from Soft Power and Interregionalism Point of View
(The 10th Kobe University Brussels European Centre Symposium «Open Science, Evolving Societies: New Horizons for EU-Japan Research» Jointly organized with Vrije Universiteit Brussel 2019)