As National Security Advisor to President Gerald Ford, advisor to President Ronald Reagan, and as National Security Advisor to President George H. W. Bush, Brent Scowcroft was at the center of the ongoing debate over how to shape American foreign policy in the post-war world. As David F. Schmitz makes clear in his new biography, Scowcroft was a realist in his outlook on American foreign policy and an heir to the Cold War internationalism that had...