Henry R. Nau's bestselling book, Perspectives on International Relations is admired for its even-handed presentation of realism, liberalism, constructivism, and critical theory--and for expertly applying those perspectives in every chapter. Students focus on the ways the different perspectives shape our understanding of the root causes of historical events and current controversies in world affairs, and learn to think critically about the world's most urgent issues. The new Seventh Edition includes updates on Brexit, the rise of Donald Trump and other populist leaders, and continuing developments for North Korea, Syria, and Russia.