This is the concluding research seminar for a three year collaborative project between the International Peace Research Institute, Oslo (PRIO) and the Norwegian Institute of International Affairs (NUPI), funded by the Research Council of Norway. In addition to the project participants, the seminar will be attended by a number of leading experts in the field. A total of 13 papers will be presented at the seminar, all of which will be submitted to Comparative Social Research, edited by Kristian Berg Harpviken, to be published in 2009.