This volume contains the papers and proceedings of the eighth annual Juris Conference addressing new developments in investment treaty arbitration with a focus on the fundamental issues that have drawn some of the greatest controversies in the jurisprudence over the past few years. The four topics addressed in this book include: Challenges to Arbitrators: Should the Challenge Process Be Overhauled?New Developments in Definition of "Investment": What Is the Role of the Concept of "Property" in Investment Arbitration?Is Investment Treaty Arbitration a Mechanism to Second-guess Governments' Exercise of Administrative Discretion: Public Law or Lex Investoria?Awarding Damages: Proportionality, Contributory Fault, and Arbitral Tribunals' Discretion or Toss of a Coin? Contributors: Meriam N. Alrashid Paul Barker Julie Bédard Alexander Bĕlohlávek Amal Bouchenaki Mark N. Bravin Kate Brown de Vejar Julián Cárdenas Garcia Tina Cicchetti Robert A. DeRise Paolo Di Rosa James Egerton-Vernon Timothy L. Foden George K. Foster John Y. Gotanda George Kahale III Jonathan S. Kallmer Joshua Karton Matthew S. Kronby Pablo D. López Zadicoff Juan Felipe Merizalde Urdaneta Craig Miles Caline Mouawad Timothy G. Nelson Michael Nolan Eloïse Obadia Sirshar Qureshi Charles E. Roh Charles B. Rosenberg Margarita R. Sánchez Matthew D. Slater Fernando A. Tupa Janet M. Whittaker