This Group produced for us in 2005 its unique report on Accountability, Investigation and Due Process in International Organizations (Nijhoff Law Specials 2005) and it continued its work in Vienna in 3-5 May 2006. It was warmly welcomed by Franz Strehl, President of the IIAS, and Manfred Matzka, member of the IIAS Executive Committee, at a reception given by the Federal Chancellery. Hosted by the Organization for Security and Cooperation in Europe (OSCE), the Group met in the Segmentgalerie of the Hofburg.