In the aftermath of the terrorist attacks in Paris, French President François Hollande called for legislative reforms that would expand the country’s ability to fight terrorism both at home and abroad. He appealed for amendments to the Constitution that would create "an appropriate tool we can use without having to resort to the state of emergency". In the light of the fact that President Hollande sought to extend the current state of emergency, we wonder: what is the line between collective security and individual liberty? In the following exclusive interview for EPOS, Emmanuel Dupuy tries to answer this hard question. Expert in security issues and geopolitics of the Mediterranean region, Dupuy is the President of Paris-based institute IPSE, Institut Prospective et Sécurité en Europe. In the interview, he focuses on the security aspects of the issues, and he analyses accurately the debate on the traditional democratic guarantees that could be affected and be jeopardized after the latest event