The past year has again confirmed The Investment Treaty Arbitration Review’s contribution to its field. The biggest challenge for practitioners and clients over the past year has been to keep up with the flow of new developments and jurisprudence in the field. Many useful treatises on investment treaty arbitration have been written. The relentless rate of change in the field rapidly leaves them out of date. In this environment, therefore, The Investment Treaty Arbitration Review fulfils an essential function. Updated every year, it provides a current perspective on a quickly evolving topic.