The Centre for Defence & International Security Studies is a wholly independent organisation engaging in research, analysis, commentary and discussion on issues of significance within the broad context of international security. Established in 1990 at Lancaster University, the Centre has no allegiances, but seeks to influence policy through the stimulation of debate.

In particular, CDiSS serves as a conduit between the academic community, government and other official and unofficial bodies, and the defence and security industries.  The Centre organises conferences and seminars, undertakes focused and directed research and publishes papers in hard and soft copy.  Its members also contribute to journals.  Membership of CDiSS includes those with a background in academia, industry , the armed forces, non-governmental organisations, government and the media.