Professor Haynes is recognised as an international authority in five separate areas: religion and politics; religion and international relations; comparative politics and globalisation; democracy and democratisation; and development issues. He has written many books, journal articles and book chapters, totalling more than 120 such publications since 1986. They include a 17,000-word discussion paper for the Geneva-based United Nations Research Institute for Social Development, ‘Religion, Fundamentalism and Identity: A Global Perspective’ (1995).

Between 1993 and 2008, Professor Haynes produced 17 books (12 single authored and five edited). His most recent books are: Comparative Politics in a Globalizing World (Polity 2005); The Politics of Religion. A Survey (editor and contributor of two-thirds of the book’s content) (Routledge, 2006); An Introduction to Religion and International Relations (Pearson, 2007); Religion and Development: Conflict or Cooperation? (Palgrave, 2007); Development Studies: A Short Introduction (Polity, 2008) and The Handbook of Religion and Politics (Routledge, 2008).