Ever Looser Union?: Differentiated European Integration

The Parliament of Man: The Past, Present and Future of the United Nations

Witsec: Inside the Federal Witness Protection Program

Constitutional Preferences and Parliamentary Reform: Explaining National Parliaments' Adaptation to European Integration

Interventions: A Life in War and Peace

Interorganizational Diffusion in International Relations: Regional Institutions and the Role of the European Union

The Butcher's Trail: How the Search for Balkan War Criminals Became the World's Most Successful Manhunt

Integration and Differentiation in the European Union: Theory and Policies

An Insider's Guide to the UN: Third Edition

A Theory of International Organization

2016 Building Better Governance: The Korean Case

Democracy Promotion by Functional Cooperation: The European Union and its Neighbourhood

The Mammoth Book of Conspiracies

Measuring International Authority: A Postfunctionalist Theory of Governance, Volume III

The Elgar Companion to the Hague Conference on Private International Law

The Age of Unpeace: How Connectivity Causes Conflict

Climate Change and the UN Security Council

Human Trafficking: A Global Perspective

Australia's First Spies: The remarkable story of Australia's intelligence operations, 1901-45

On Palestine