The 1961 Vienna Convention on Diplomatic Relations has for over 50 years been central to diplomacy and applied to all forms of relations among sovereign States. Participation is almost universal. The rules giving special protection to ambassadors are the oldest established in international law and the Convention is respected almost everywhere. But understanding it as a living instrument requires knowledge of its background in customary international law, of the negotiating history which clarifies many of its terms and the subsequent practice of states and decisions of national courts which have resolved other ambiguities. Diplomatic Law provides this in-depth Commentary. The book is an essential guide to changing methods of modern diplomacy and shows how challenges to its regime of special protection for embassies and diplomats have been met and resolved. It is used by ministries of foreign affairs and cited by domestic courts world-wide. The book analyzes the reasons for the widespread observance of the Convention rules and why in the special case of communications - where there is flagrant violation of their special status - these reasons do not apply. It describes how abuse has been controlled and how the immunities in the Convention have survived onslaught by those claiming that they should give way to conflicting entitlements to access to justice and the desire to punish violators of human rights. It describes how the duty of diplomats not to interfere in the internal affairs of the host State is being narrowed in the face of the communal international responsibility to monitor and uphold human rights.

Diplomatic interference carries considerable potential for disruption. In this context, diplomats have been accused of insulting behaviour, the funding of political parties, incitement to terrorism and even attempts to topple the host government. Reactions can be harsh: expulsions are common and, occasionally, diplomatic relations are severed altogether. But an evaluation under international law faces challenges. Often enough, charges of interference are made when legitimate interests are involved – for instance, when diplomats criticise the human rights record of their hosts. In such cases, diplomats may be able to invoke grounds which are recognised under international law. On the basis of more than 300 cases of alleged diplomatic interference and the practice of about 100 States and territories, Diplomatic Interference and the Law provides an examination of the main areas in which charges of meddling have arisen – such as lobbying activities, contacts with the opposition, propaganda, the use of threats and insults and the granting of asylum. It analyses situations in which the sovereignty of the receiving State meets competing interests and offers solutions which avoid a conflict of norms. It concludes with useful advice for foreign offices and diplomatic agents and underlines the most efficient ways of dealing with situations of alleged interference. ''A book that is here to stay! It is essential reading for diplomats, academics, journalists, students and everyone who has an interest in international law and justice. Based on rigorous research, Paul Behrens' book offers new and thoughtful perspectives on the Vienna Convention on Diplomatic Relations which we drafted in 1961. It demonstrates just how important it is to have a lawyer of his impartiality and integrity if we want to reach peaceful and lasting solutions in international relations. Diplomatic Interference and the Law has the makings of an instant classic, and I have no doubt that it will pave the way for the sorely needed reform of diplomatic law.'' Dr Nelson Iriñiz Casás, Vice President of the Committee of the Whole of the Vienna Conference on Diplomatic Relations in 1961; former Head of the diplomatic missions of Uruguay to Austria, Czechoslovakia, Hong Kong, Denmark and Sweden; author of Corrupción en la ONU. ''Dr Behrens's book rigorously analyses the legal doctrine of non-interference by diplomats in their hosts' internal affairs, and how it may conflict with legal obligations to combat, for example, denial of self-determination and breaches of human rights. Exhaustively researched and in accessible language, with copious, often entertaining examples, it will be an indispensable guide for diplomats. "Behrens on diplomatic interference" will be cited as the definitive authority on the matter for the foreseeable future. I recommend this book to diplomats, lawyers and the general reader: they will all read and refer to it with profit and immense pleasure.'' Sir Brian Barder KCMG, BA (Cantab.), is a former British ambassador to Ethiopia, Bénin and Poland and High Commissioner to Nigeria and Australia. ''Paul Behrens' book breaks new ground. It is the first study to focus on the vexed question of diplomatic 'meddling' in the domestic affairs of the receiving State. It has heightened topicality as many Western governments in their concern to promote human rights and democracy urge their diplomats to be active in their support of civil society, particularly in countries with authoritarian governments. This book is replete with case studies covering the 50 years since the signature of the Vienna Convention and provides an invaluable pathway through this legal minefield.'' Sir Ivor Roberts KCMG FCIL, President of Trinity College, Oxford; Former British Ambassador to Yugoslavia, Ireland and Italy

"The Vienna Convention on Diplomatic Relations (VCDR) was signed at the height of the Cold War more than fifty years ago. The agreement and its negotiation have become a cornerstone of diplomatic law. A Cornerstone of Modern Diplomacy, which is based on archival research in the National Archives (London), the Austrian State Archives (Vienna) and the Political Archive (Berlin), delivers the first study of the British policy during the negotiation of the key convention governing diplomatic privileges and immunities: the 1961 Vienna Convention on Diplomatic Relations. The book provides a complete commentary on the political aspects of the codification process of diplomatic law. By clearly presenting the case with accessible analysis, author Kai Bruns makes the relations between international law and politics understandable, stressing the impact of the emergence of the third world in UN diplomacy. This unique study is a crucial piece of scholarship, shedding light on the practice of United Nations conference diplomacy and the codification of diplomatic law at the height of the Cold War"--

It gives me great pleasure to write a foreword to :\1r. Sen's excellent book, and for two reasons in particular. In the first place, in producing it, Mr. Sen has done something vvhich I have long felt needed to be done, and which I at one time had am bitions to do myself. \Vhen, over thirty years ago, and after some years of practice at the Bar, I first entered the legal side of the British Foreign Service, I had not been working for long in the Foreign Office before I conceived the idea of writing - or at any rate compiling - a book to which (in my own mind) I gave the title of "A ~fanual of Foreign Office Law. " This work, had I ever produced it in the form in which I visualised it, could probably not have been published con sistently with the requirements of official discretion. But this did not worry me as I was only contemplating something for private circulation within the Service and in Government circles. :Mr. Sen's aim has been broader and more public-spirited than mine was; but its basis is essentially the same.

The granting of diplomatic asylum to Julian Assange, the dangers faced by diplomats in troublespots around the world, WikiLeaks and the publication of thousands of embassy cable - situations like these place diplomatic agents and diplomatic law at the very centre of contemporary debate on current affairs. Diplomatic Law in a New Millennium brings together 20 experts to provide insight into some of the most controversial and important matters which characterise modern diplomatic law. They include diplomatic asylum, the treatment (and rights) of domestic staff of diplomatic agents, the inviolability of correspondence, of the diplomatic bag and of the diplomatic mission, the immunity to be given to members of the diplomatic family, diplomatic duties (including the duty of non-interference), but also the rise of diplomatic actors which are not sent by States (including members of the EU diplomatic service). This book explores these matters in a critical, yet accessible manner, and is therefore an invaluable resource for practitioners, scholars and students with an interest in diplomatic relations. The authors of the book include some of the leading authorities on diplomatic law (including a delegate to the 1961 conference which codified modern diplomatic law) as well as serving and former members of the diplomatic corps.