Unlike the massive law books published on national security or shorter titles published on specific issues arising out of the war on terror and the formation of the U.S. Department of Homeland Security (DHS), this book provides a succinct but detailed survey of recent legislation in this area. It examines relevant acts, laws, and promient cases and summarises their policy implications. The coverage includes international relations and diplomacy, the history of the DOD and its structure, the formation and current structure of DHS, and how national and the funding of homeland security initiatives. While grounded in legal references, the book is also highly readable and readily accessible to non-legal professionals.