This new reader in international theory brings together nine new essays and four classics, two of them heavily revised for republication here, to provide a clear introduction to the two dominent traditions in contemporary international relations: realism and neoliberalism. As well as setting out the current state of each approach and mapping out the possibilities of creative synthesis, the book focuses on emerging neorealist and neoliberal perspectives on such key issues as international trade and organisation, arms control and morality in foreign policy.