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= Sergio Marchisio = Sergio Marchisio (born 1949) is Full Professor at Sapienza University of Rome. He also serves as legal expert for the Italian Ministry of Foreign Affairs and delegate to several international organizations and conferences.

During his career, he has conducted comprehensive legal studies, which embrace several areas of international law as well as European law. The examination of the international legal practice and States’ behaviour has assumed a central role in his scientific researches. He has been often involved in the law-making processes bringing to the creation of International law norms.

Education and Academic Career
Marchisio started his academic career as Assistant Professor and chargé de cours of international law at the Universities of Florence and Camerino. Since 1979, he was Full Professor at the University of Perugia. From 1997, he has been appointed Full Professor at Sapienza University. From 1995 to 2015, Marchisio taught European Union Law at LUISS Guido Carli University of Rome.

Since 1998, he is Member of the Scientific Board of the Sapienza PhD in Public, Comparative and International Law. He is also the Director of the 2nd Level Master Course in International Protection of Human Rights (2009-present). Since 2014, he is Member of the Academic Board of the Sapienza School for Advanced Studies (SSAS).

He has been invited to give keynote lectures and speeches to several national and foreign universities. In 2016, he taught Les activités spatiales internationales entre droit public et droit privé, at the Hague Academy of International Law.

Scientific Contribution
Throughout his scientific career, Marchisio has deepened several topics of international law. The general scientific approach follows the model of normativism, for having studied it with great masters, accompanied with timely verification of the international practice.

He devoted several scientific contributions to the study of the Italian treaty-making power and the identification of the conditional norms for an autonomous power of the government to conclude agreements in simplified form, not expressly provided by the 1948 written Constitution. A typical case of exercise of such a governmental power to conclude agreement in simplified form was that of the conventional regime of military bases located in foreign territory in international law, including the practice concerning the conclusion of secret treaties.

In the Seventies, he was a pioneer on studying legal issues not adequately addressed by the legal scholars, such as the international development law within the United Nations system, the status of international non-governmental organizations, the legal framework of multi-bilateral cooperation.

Due to his consideration of the importance of international practice, he continued, under the supervision of R. Ago, L. Ferrari Bravo and G. Gaja, the long-standing research on the Italian practice of international law, edited and published in 1995 by the CNR (I-VIII volumes), then digitalized and available at www.prassi.cnr.it. This result was possible thanks to the creation of the Institute for International Legal Studies of the National Research Council, of which he was founder and Director between 1994 and 2011.

Other relevant scientific contributions deepen the legal and institutional aspects of international organizations, particularly the United Nations (FAO, status of EU as member of international organization, role of the General Assembly in the maintenance of peace, peacekeeping operations and the use of force, the relation between general international law and the law of the UN); international environmental law (general aspects of dispute settlement, Rio Declaration on Environment and Development, promotion of sustainable development in the Mediterranean area); international criminal law (Statute of the ICC, the Priebke case and the non-applicability of the ICC Statute); as well as other areas of international law (human rights, refugee law, disarmament ).

As member of the UN Committee on the Peaceful Uses of Outer Space, since the late Nineties, he has devoted specific attention to the study of space law at large. Marchisio is, in fact, an internationally recognized expert on space law, field that he covered with several publications, starting from Lezioni di diritto aerospaziale in 2000.

Author of over 200 scientific publications. Among them: Corso di diritto internazionale (2017); ''Diritto ambientale. Profili internazionali, europei, comparati (2017); Disarmo, limitazione degli armamenti e diritti umani (2016); L’ONU. Il diritto delle Nazioni Unite (2012); Rio 1992. Vertice per la Terra (1993); Le basi militari nel diritto internazionale (1984); La cooperazione per lo sviluppo nel diritto delle Nazioni Unite'' (1977).

Professional Career
In addition to his scientific contributions, he has participated to several international negotiations. He has always adopted a pragmatic approach in order to solve legal problems raised during discussions. In this sense, he has been involved in several negotiations and international initiatives regarding the identification or creation of norms of responsible behaviour in outer space.

Between 2001 and 2002, he was Chair of the Committee of Governmental Experts entrusted to negotiate the Space Assets Protocol to the Cape Town Convention and of the Commission of the Whole of the Berlin Diplomatic Conference, which adopted the Protocol. He currently chairs the Preparatory Commission, established pursuant the Resolution 1 of the Berlin Diplomatic Conference, to act as Provisional Supervisory Authority for the establishment of the International Registry for Space Assets.

Delegate to the COPUOS, where he served as Chairman of the Legal Subcommittee (2004-2006) and, in 2010, Co-chair of the Expert Group D of the Working Group of the COPUOS Scientific and Technical Subcommittee (STSC) on the Long-term Sustainability of the Outer Space Activities (LTSSA).

Delegate to the EU Council's Working Party on Global Disarmament and Arms Control (CODUN, 2007-2015), and to the Working Party on Non-Proliferation (CONOP, 2016-present).

Member of the EEAS-EU Task Force for the International Code of Conduct on Outer Space Activities (ICoC). Delegate to the EU consultation and negotiation process on the ICoC (2007-2015), he was elected Chair of the multilateral negotiations on an ICoC held at the United Nations in New York, in July 2015.

He has been member of UN Groups of Governmental Experts (GGE): on Outer Space Transparency and Confidence-Building Measures (GA Resolution 65/68) and on Practical measures for the Prevention of an Arms Race in Outer Space (GA Resolution 72/250).

Delegate to many international diplomatic conferences, such as the United Nations Conference on Environment and Development (Rio de Janeiro, 1992); the United Nations Diplomatic Conference of Plenipotentiaries on the Establishment of an International Criminal Court (Rome, 1998); the 2001 Cape Town Diplomatic Conference for the adoption of the UNIDROIT Convention on International Interests in High Value Mobile Equipment and Protocol on Aircraft Assets (Cape Town, 2001).

Until 2014, he has been Member of the Italian Section of the International Commission on Civil Status of Strasbourg (CIEC).

Since 2007 he is Chairman of the European Centre for Space Law (ECSL) within the European Space Agency (ESA). He is also Member of the Advisory Council of the European Space Policy Institute (ESPI).

From 2014 to 2018, he was Member of the Board of Directors of the Italian Space Agency (ASI).

Honours
In 2011, he received the Award of the International Academy of Astronautics for Social Sciences for his contribution to space law. In 2015, he received the Distinguished Service Award of the International Institute of Space Law for his leadership in the development of international law and institutions and his leading role for advancing international space law in the United Nations and other intergovernmental bodies.