While the war in Afghanistan saw most industrial countries back the US-led campaign, the subsequent war in Iraq has profoundly divided international opinion, and likely represents a watershed in the post? Cold War international order. "The Iraq War" examines the full range of explanations of the conflict, as well as its significance for the Middle East, for key international relationships, and for the future of the international system. The authors critically assess the foreign-policy decisions of both global and regional actors. What policies were adopted, and against what opposition? What state interests were served or compromised in the process? What are the likely longer-term consequences of each country's position? Addressing these questions, as well as broader issues of regional stability, global political economy, and the changing nature of warfare, they offer an in-depth, systematic analysis that brings clarity to this complex subject.