The extensively updated third edition of National Security Law includes 34 contributions by distinguished scholars and practitioners. This edition includes new chapters on law and the cyber domain, the control of terrorism assets, lawfare, detention, and the Foreign Intelligence Surveillance Act, as well as chapters on traditional subjects of national security law such as use of force, war powers, international and domestic terrorism, intelligence, arms control, homeland security, human rights, immigration, export controls, environmental law, freedom of expression, and access to national security information. This third edition presents a uniquely comprehensive, timely and unmatched coverage of this complex field of law and policy.