This is a fully updated and revised edition of the best-selling dictionary of political terms. Containing more than 1,700 entries, including new material on topics such as NGOs, butterfly ballots, decentralisation, ethnic cleansing, and direct action, this dictionary has been written by a leading team of political scientists and covers political thinkers, institutions, and concepts. The dictionary has international coverage and will prove invaluable to students and academics studying politics and related disciplines, as well as professionals and the general reader. Appendices list the political leaders of a range of countries and international institutions.