"Ian Shapiro and Adam Tooze could not have produced a more timely or fitting book. NATO, arguably the longest alliance of predominant political and military power in international history, has been undergoing a prolonged identity crisis. By assembling the essential primary documents and a thoughtful set of diverse expert commentary, the editors shine a bright light on past controversies and identify the immense challenges NATO faces today."Michael Doyle, author of The Question of Intervention: John Stuart Mill and the Responsibility to Protect, and University Professor, Columbia University -- Michael Doyle