This series explores modern intelligence: its past, present and future, the manner in which it is gathered and the causes for which it is harnessed. Whether through rich empirical detail, conceptual development and/or theoretical expansion, books in this series provoke original questions for researchers and students alike. Intelligence has changed. Secret service is no longer just about spying or passively watching a target. Espionage chiefs now command secret armies and legions of cyber warriors who can quietly shape international relations itself. Intelligence actively supports diplomacy, peacekeeping and warfare: the entire spectrum of security activities. As traditional inter-state wars become more costly, covert action, black propaganda and other forms of secret interventionism become more important. This ranges from proxy warfare to covert action; from targeted killing to disruption activity. Meanwhile, surveillance permeates communications to the point where many feel there is little privacy. Intelligence, and the accelerating technology that surrounds it, have never been more important for the citizen and the state.