Associate Professor at the Porto Law School of the Catholic Portuguese University. Since 1986, teaching and researching in international law at the Porto School, Faculty of Law, UCP.
Currently, coordinator of the International Studies Programme, a Master’s in International and European Law
Invited Professor at Blanquerna Comunicació, Universitat Ramon Llul, Barcelona (2013- ). Main research areas: self-determination of peoples, use of force in international relations, human rights, state responsibility, war, and IHL. He was Chef de file of the Portuguese Delegation to the 5+5 initiative, Civil Society (2019). Minister of National Defence of Portugal (November 2015-October 2018). President of the Portuguese Regulatory Authority for the Media (2006 – 2011). Media freedom expert to the OSCE Representative on Freedom of the Media, Viena, 2014. Electoral observer to the general elections in Angola, 2013. Dean, Porto School, Faculty of Law, Universidade Católica Portuguesa (2005-2006). Rapporteur for the Judicial Sector, Joint Assessment Mission for East Timor, World Bank, 1999. Coordinator and member of a mission of international electoral observers to the Popular Consultation in East-Timor, 1999. PhD in International Law, Faculty of Law Universidade Católica Portuguesa, 2002. Title translation: “Between Solitude and Interventionism: The Right of Self-Determination of Peoples and Third-Party State Reactions”. Master’s in international law, Faculty of Law Universidade Católica Portuguesa (UCP), 1990. Diplôme of l'Institut Européen des Hautes Etudes Internationales, Nice, 1985.