Center Contacts

Horacio A. Grigera Naon

Horacio Grigera Naón
Center Director and Distinguished Practitioner in Residence

Phone: (202) 895-4531

Dr. Grigera Naón, presently an independent international arbitrator and consultant on arbitration and business and international law matters, is a former Secretary General of the International Court of Arbitration of the International Chamber of Commerce and a practitioner in the field of international commercial arbitration and international business law for over thirty years. Dr. Grigera Naón has also widely published in those areas, including a book on “Choice-of-Law Problems in International Commercial Arbitration” (1992) and lectures at the Hague Academy of International Law (2001) on the same topic.

Dr. Grigera Naón, is a Distinguished Practitioner in Residence at the Washington College of Law, American University, Washington D.C. and the Director of its Center for International Commercial Arbitration, a former Special Counsel with White & Case LLP and a former Senior Counsel with the International Finance Corporation, Washington D.C.  He also serves as an adviser to the American Law Institute’s project on restating the U.S. law of international commercial arbitration. Professor Grigera Naón holds LL.M. and S.J.D degrees from Harvard Law School, LL.B and LL.D. degrees from the School of Law of the University of Buenos Aires and is a member of the Argentine Federal, New York, District of Columbia, and United States Supreme Court Bars.

Susana Castiglione

M. Susana Castiglione
Assistant Director

Phone: (202) 274-4321

Susana Castiglione is the Assistant Director of the Center on International Commercial Arbitration where she is responsible for the Center’s activities including the International Arbitration Summer Program, Seminar and Lectures, as well as providing research and support for all international arbitration courses and activities at WCL.

Ms. Castiglione is a lawyer from Argentina where she litigated environmental, tort, malpractice, and labor law cases for more than ten years. She also worked at the Argentine Library of Congress as a legislative researcher and as a congressional aide. In 1992 she joined Kattan Environmental Law Firm where she conducted public interest advocacy. In addition, she taught Civil Law and Environmental Law at the University of Buenos Aires. Ms. Castiglione also works as an independent consultant on international and comparative health law issues for international organizations. She has several legal publications, including: "Background Paper on Insolvency and Health Expenses" (2010), "Legislation for the Control and Management of Hospital Infections" (2007), "Management of Dead Bodies in Disaster Situations" (2004), "Non-Intentional Injuries" (2004), "Legislation on Occupational Risks and Safety in Central America" (2003), and "Pesticide in Central America: Analysis of Legislation and National and International Mechanisms of Enforcement, Focus on Gender" (1999). Susana holds an LLM degree from American University Washington College of Law.


Susan Franck

Susan D. Franck
Professor of law

Phone: (202) 274-4362

Professor Franck is an expert in the fields of international economic law, dispute settlement, and the empirical analysis of international law. Professor Franck's legal experience includes serving at the United Nations Conference on Trade and Development and practicing in international dispute settlement with Wilmer, Cutler & Pickering [now Wilmer Hale] in Washington, DC and Allen & Overy in London, England. She is qualified to practice law in England and Wales, Minnesota and the District of Columbia. She is the Chair of the Academic Council of the Institute for Transnational Arbitration, a member of the Executive Committee of the American Society of International Law, and a member of the American Law Institute.

Professor Franck is the author of various articles published in journals such as the American Journal of International Law, Duke Law Journal, Fordham Law Review, Harvard Journal of International Law, Minnesota Law Review, North Carolina Law Review, Virginia Journal of International Law, and Washington University Law Review. In connection with the Lewis Center and Transnational Law Institute, she organized the Joint Symposium on International Investment and Alternative Dispute Resolution, and created a UNCTAD publication summarizing the proceedings, which occurred through a collaboration blog, other online mediums and a traditional in-person conference.

Professor Franck has been elected to the International Who's Who of Commercial Arbitration and received the "New Voices" award from the American Society of International Law (ASIL) for her groundbreaking empirical analysis of investment treaty arbitration.

Claudia Frutos Peterson

Claudia Frutos-Peterson
Adjunct Professor
Managing Partner, Curtis, Mallet-Prevost, Colt & Mosle LLP

Phone: (202) 274-4321

Dr. Frutos-Peterson is Managing partner of the Washington, D.C. office and a member of the International Arbitration group.

Dr. Frutos-Peterson was formerly counsel at the International Centre for Settlement of Investment Disputes (ICSID) from 2001 to 2009. At ICSID, she served as Secretary of Tribunals in numerous arbitral proceedings brought under the ICSID Convention and the ICSID Additional Facility Mechanism, based on the bilateral and multilateral investment treaties.

She focuses her practice on arbitration, international law and international investment law and works with multiple governments and state entities. She has represented foreign states in investor-state arbitrations under the Arbitration Rules of the International Centre for Settlement of Investment Disputes (ICSID) and the United Nations Commission on International Trade Law (UNCITRAL).

Dr. Frutos-Peterson has also represented private companies in international commercial arbitration under the Singapore International Arbitration Centre (SIAC) and the ICC International Court of Arbitration (ICC).  She has also acted as an arbitrator under the ICC Arbitration Rules and the Rules of the Centro de Conciliación y Arbitraje (CeCAP) of Panama.

Dr. Frutos-Peterson is an Adjunct Professor at the American University Washington College of Law in Washington D.C., where she lectures on international commercial arbitration and investor-state arbitration. She is also a frequent speaker at conferences and seminars in the United States and abroad.  She is the author of the book L’émergence de l’arbitrage commercial international en Amérique latine: l’efficacité de son droit, published by L’Harmattan.

Claudia Frutos Peterson

Björn Arp
Adjunct Professor & Fellow
Assistant Director International Program Curriculum  (ILSP)

Phone: (202) 274-4346

Dr. Björn Arp is a Fellow and Adjunct Professor at American University Washington College of Law Center on International Commercial Arbitration. He co-teaches International Commercial Arbitration in the online Certificate Program on International Commercial Arbitration, as well as other courses. He is a partner at Aparicio, Arp & Associates LLC, in Washington, D.C., where he represents parties in international investment protection and human rights cases. Bjorn Arp is on the Roster of Experts of the Inter-American Development Bank’s Independent Consultation and Investigation Mechanism.

From 2000 to 2010, he taught Public International Law, European Union Law, and Investment Arbitration at the University of Alcalá, Madrid. In 2007, Arp was a visiting researcher at Harvard Law School. His publications and research have focused on international investment protection and human rights.

Björn Arp holds a J.D. in Law from Alicante University, a Ph.D. in International Law from the University of Alcalá in Madrid, and a LL.M. in International Legal Studies from American University Washington College of Law. He is admitted to practice in New York, and he is a member of the American Society of International Law and the Inter-American Bar Association.

Hernando Otero
Fellow and Adjunct Professor


Hernando Otero is a Fellow at the American University Washington College of Law Center on International Commercial Arbitration where he teaches arbitration and mediation. He also serves as a mediator with the District of Columbia’s Superior Court. He has served as an arbitrator before the World Bank’s International Center for Settlement of Investment Disputes (ICSID) and has been appointed as an arbitrator by the International Chamber of Commerce’s (ICC) Court of Arbitration, the Bogota Chamber of Commerce Arbitration and Conciliation Center’s (CAC) Court of Arbitration and the Financial Industry Regulatory Authority (FINRA) in the United States. He has also appeared as counsel of record in proceedings under the ICSID Convention, the ICSID Additional Facility and the UNCITRAL Arbitration Rules pursuant to multilateral and bilateral trade and investment treaties (FTAs and BITs) and commercial agreements. Hernando Otero is on the London Court International Arbitration’s (LCIA) database of arbitrators and on the panel of international arbitrators of the Hong Kong International Arbitration Centre (HKIAC), the Shanghai International Economic and Trade Arbitration Commission (SHIAC) and the Kuala Lumpur Regional Centre for Arbitration (KLRCA).

Dean's Fellows (Fall 2018)


Francisco Sepúlveda Burgos (LL.M. Candidate, May 2019)
Eunice Mills (LL.M. Candidate, May 2018)