Fully updated and revised, the second edition of International Relations: A Concise Introduction offers a clear and succinct overview of the forces that govern our world. Outlining key theories, traditional approaches, and controversies old and new, Michael Nicholson also importantly addresses the relationship and incongruities between abstract theories of International Relations and contemporary realities of the international system in an increasingly globalized post-Cold War world. As international players-from vast and immensely diverse conglomerate corporations to the UN, and a host of other non-state actors-increasingly influence the world agenda, the question begs itself whether states and their interactions should still comprise the exclusive, or even primary, focus of any study of international relations. Accordingly, Nicholson provides an overview of such pressing concerns as global warming, the growing disparities between rich and poor, the resurgence of ethnic and nationalist conflict, and the health of the environment, and how these affect international relations. He further examines the moral problems inherent in any discussion of international relations, including questions of international law, terrorism and freedom fighters, and human rights. Crucial to any introduction to the field, the book serves up a brief history of the last century, focusing on the legacies of imperialism and the accelerating pace of globalization.