International Relations Theory for the Twenty-First Century

International relations theory has been the site of intense debate in recent years. A decade ago it was still possible to divide the field between three main perspectives – Realism, Liberalism, and Marxism. Not only have these approaches evolved in new directions, they have been joined by a number of new ‘isms’ vying for attention, including feminism and constructivism. International Relations Theory for the Twenty-First Century is the first comprehensive textbook to provide an overview of all t