Fully updated seventh (centenary) edition of the globally recognized leading authoritative text on diplomatic law and practice.Includes increased coverage of important issues in diplomacy, such as the doctrine of humanitarian intervention and responsibility to protect (R2P), human rights, public diplomacy, secret diplomacy, secret intelligence, track two (alternative) diplomacy.Investigates the role of non-state actors, including NGOs as well as violent non-state actors such as ISIL.Examines the impact on diplomacy of the Edward Snowdon and Julian Assange cases.Discusses the work of international criminal courts. Edited by a former British ambassador to three States and features contributions from internationally recognized experts in diplomatic law, human rights, and diplomatic practice