This book contains the contributions to the Vienna Arbitration Forum on "Investment and Commercial Arbitration - Similarities and Divergences" which took place at the University of Vienna/Law School in November 2008. The conference focused on topical issues in international investment arbitration and in commercial arbitration. Procedural questions arising in both of these areas are very similar. Featuring speakers from academia as well as legal practice, the Vienna Arbitration Forum addressed controversial topics from an investment arbitration perspective as well as a commercial arbitration point of view and explored similarities and divergences. In four parallel structured sessions Christina Knahr and Julia Mair (both University of Vienna) spoke about "Consolidation of Proceedings in Investment and Commercial Arbitration", Stephan Wittich (University of Vienna) and Franz T. Schwarz (Wilmer Hale, London) addressed "The Limits of Party Autonomy in Investment and Commercial Arbitration", Irmgard Marboe (University of Vienna) and Vladimir Pavic (University of Belgrade) dealt with the issue of "Annulment of ICSID Awards" and "Challenge of Arbitral Awards before Domestic Courts", and Noah Rubins (Freshfields, Paris) and Christopher Kee (Deakin University) spoke about "Independence, Impartiality and Duty of Disclosure in Investment and Commercial Arbitration".