the centre of african studies (cas) offers a phd programme with an international reputation, awarded from one of the world's leading universities.  the centre of african studies is part of the school of social and political science (sps) and is a leading hub for the study of africa. since its foundation in 1962, it has expanded its research activities from its core disciplines of history, politics and social anthropology to include many other fields, including:  * law * humanitarianism * sociology * gender studies * environment and development * political economy  * religious studies    recent doctoral dissertations from this programme include: * tweeting 'truths': rumour and grammars of power in kenya  * divided waters: a hydropolitical analysis of development, space, and labour in n'djamena, chad   * law beyond the state: the makings of justice in urban sierra leone