The author currently teaches at Faculty of Law, University of Macau, People’s Republic of China. His 2017 doctoral thesis in the University of Coimbra is an analysis of the principle nullum crimen sine lege in international law with a specific focus on the work of the war Courts of the 20th Century. As of lately, his research has mainly been focused on international criminal law, the law of war and peace, particularly the role of the Security Council in the maintenance of international peace and security, and the constitutional law of the People’s Republic of China, with a focus on the constitutional systems of Hong Kong and Macau.