ACKNOWLEDGMENTS

As with any book, Indispensable was made possible by the efforts of many people beyond its author. Any failures or mistakes, however, remain entirely my responsibility. This book began as a PhD dissertation, so I would like to thank, first, the members of my committee: Stanley Hoffmann, Kenneth Oye, Roger Petersen, and Stephen Van Evera. All four gave generously of their time and energy during every stage of this project, even when it went in directions far from what they had anticipated. Next I must thank my very good friend Daniel Summers-Minette, whose contributions to this research, particularly its quantitative components, simply cannot be valued highly enough. I also owe special thanks to my wonderful editor, Tim Sullivan, ...

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