The British Parliament and Foreign Policy in the 20th Century explores the ways in which parliaments in Britain and internationally have affected and democratized foreign policy since World War I.

Includes six essays by expert historians on the positive and negative implications of increased parliamentary involvement in foreign policy Considers a broad range of topics, such as increased participation by MPs, parliamentary procedure, extra-parliamentary networks, constitutional changes, and the rise of transnationalisation Discusses minority protection under the League of Nations, the atomic question in the aftermath of World War II, the Falklands War, parliamentary debates during the Iraq War, and relationships between the UK and European Parliaments Makes use of new data from analysis of parliamentary debates, archival sources, and media accounts