Presenting the development of international relations and its theories in a historical narrative spanning 500 years, International Politics: How History Modifies Theory offers a fresh perspective on twenty-first-century world politics. Rather than simply listing IR theories, this text demonstrates that certain theories explain the behavior of world politics better than others based on historical context. Offering a broader and deeper historical perspective than any other text on the market, it demonstrates how history can explain and impact theory development in the field of international relations.