This book contains the written contributions to the 5th conference on “New Developments in International Commercial Arbitration” organized by the CEMAJ of the University of Neuchâtel Faculty of Law.Highly qualified and experienced arbitration practitioners present some of the most significant new developments in international commercial arbitration: – Transposing the Principles Governing the Plea of Illegality in Commercial Arbitration into the Domain of Investment Treaty Arbitration (Prof. Zachary Douglas); – The Revised Swiss Rules of International Arbitration (Dr. Philipp Habegger); – The Influence of EU-Law on International Arbitration, in particular in Switzerland (Prof. Ulrich Haas); – How Arbitration-Friendly is the Swiss Federal Supreme Court? (Dr. Christoph Hurni); – Review of the Recent Case Law of the Swiss Federal Supreme Court (Mrs. Melissa Magliana); – The Role of Arbitration in Dealing with Sporting Fraud issues (Mr. Mike Morgan).