The challenges of change

International Security Helsinki Summit 1992 of the Heads of State or Government of the Participating States of the Conference on Security and Co-operation in Europe European cooperation Foreign relations Security, international Europe, foreign relations Helsinki Summit 1992 of the Heads of State or Government of the Participating States of the Conference on Security and Co-operation in Europe. (uri) http://id.loc.gov/authorities/names/n94001218 (uri) http://viaf.org/viaf/sourceID/LC|n94001218