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 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 shaped that policy since 1945. The type of bi-partisan cooperation and internationalism that marked the pre-Vietnam War years served as ScowcroftOs guide to how to defend American interests and promote U.S. values and institutions globally. While not always successful, Scowcroft provided a consistent internationalist voice in the midst of change.