Building on the success of the previous edition (Versailles to Maastricht: International Organisation in the Twentieth Century), this book is a valuable introduction to the complex history of modern international organization. While particular attention is paid to the League of Nations, the United Nations and the European Union, there are also chapters on the new regionalism, global governance and international regimes and global civil society. The book's approach is thematic and analytical, while providing a succinct factual account of the main developments in international organizations.