This publication presents the proceedings of an international conference in the field of nuclear security. The conference was convened to foster the exchange of practices and experiences related to the security of radioactive material under regulatory control in use, transport and storage, and the detection of nuclear and other radioactive material out of regulatory control. The conference provided a forum for Member States to share their experiences, difficulties, and lessons learned during the implementation of IAEA Nuclear Security Series No. 13, Nuclear Security Recommendations on Physical Protection of Nuclear Material and Nuclear Facilities (INFCIRC/225/Rev.5). The publication contains the President’s summary of the conference, statements from the opening and closing sessions, and an outline of the conference programme. The attached CD-ROM contains the full conference programme, the list of conference participants, and a selection of papers and presentations from the conference.