Introduction

2011 marks a new record with at least 46 new investment arbitration cases initiated against host countries - the highest number of known treaty-based disputes ever filed in one year. UNCTAD's annual review of investor-State dispute settlement (ISDS) cases, part of the IIA Issues Notes series, provides up-to-date information about ISDS developments in 2011. 2011 saw the highest number of new treaty-based ISDS cases filed under international investment agreements (IIAs) ever. The number of known new cases reached 46, bringing the total of all known cases to 450 at year's end. ...