All Glory is Fleeting: Sigint and the Fight Against International Terrorism

This article discusses the important role that Signals Intelligence (Sigint) has played, and continues to play, in the war against international terrorism. It sets out what is known or can be authoritatively established about the role that Sigint played in the events leading up to the terrorist attacks on September 11, 2001, especially the performance of America's Sigint organization, the National Security Agency (NSA). The article also analyzes what the potential future role of Sigint may be in the war on terrorism given the ever changing nature of terrorist operations, the growing number of technological impediments to effective Sigint collection against terrorist targets, and shifting geostrategic considerations on the part of the nations engaged in the fight against the international terrorists.