International arbitration lawyer William Kirtley, Managing Partner of Aceris Law, is a Franco-American Harvard-, Columbia- and Sorbonne-educated lawyer with over two decades of experience focusing on international commercial arbitration, investor-State arbitration and international construction arbitration at the highest level. He has served as counsel or arbitrator in over 200 international arbitrations, including in some of the largest international arbitrations in history. He is a member of the New York Bar, the Washington, D.C. Bar, and an inactive French Avocat à la Cour. He has served as lead counsel or arbitrator in disputes on five continents, under the UNCITRAL, ICC, ICSID, SCC, LCIA, ICDR, SIAC, DIAC, HKIAC, DIFC-LCIA, Swiss Rules, JAMS, AAA, LMAA, CICA, MIAC, AFA, LCAM and many other arbitration rules. He has also served as a legal expert on issues of public international law and as counsel in a variety of negotiations and formal mediations. He has been highly ranked by the Legal 500, Who’s Who Legal (WWL), Leaders League and many other prestigious rankings in the field of international arbitration over his career. Previously a Partner at a well-regarded Paris arbitration boutique, he was a member of the international arbitration practice groups of Shearman & Sterling LLP and Salans (now Dentons), after serving as an American Peace Corps Volunteer for two years in the Ivory Coast and working at the United Nations International Criminal Tribunal for Rwanda. He has authored numerous academic articles concerning international arbitration in leading journals. He is a member of the International Arbitration Institute, regularly speaks on international dispute resolution topics, has taught at the Universities of Paris X and Paris II Panthéon-Assas and has served as an expert for the World Bank on ADR legislation.