In the turbulent decade since the ending of the Cold War in Europe, a new element of the international relations of Asia and the Pacific has been the emergence of multilateral security dialogues. Both in governmental arenas such as the ASEAN Regional Forum and numerous "track two" channels including the Council for Security Co-operation in Asia-Pacific, it has been a decade of creative interaction and new thinking. The Asia-Pacific Security Lexicon identifies the key phrases and ideas that have been the foundation of these dialogues, looking at their origins in international diplomacy and tracing their specific adaptation and modification to the conditions of a trans-Pacific setting. Of interest to both theoreticians and practitioners, the Lexicon is at once a handbook for regional diplomacy and an assessment of the factors that have shaped regional discussions.