This report presents a summary of studies, results and usefulness to the MFA within the FOA research area International Security. The activities have been directed towards support to disarmament negotiations, export controls and verification within the N, B and C areas. Nuclear weapons: FOA continues to prepare a national data center (NDC). This includes seismic detection, collection of xenon gas, and filtering of radio nucleids. Support has been given to CTBT and the coming FMCT treaties and other disarmaments limitations. Support has also been given directly to CTBT. Biological weapons: support has been given to the negotiations on a verification protocol to the biological and toxine weapons convention, the Australia Group and export control issues Chemical weapons: support has been given to the Australia Group and export control issues. In addition, the verification laboratory has continued under the convention on chemical weapons. Other support- FOI has supported the initial work of the new organisation UNSCOM.