The secret to Cold War success wasn't strength—it was mystery. Dwight Eisenhower projected nuclear annihilation while quietly orchestrating flexible covert operations. John Kennedy announced graduated responses and invited the world to test them. One approach kept the peace; the other led to the Bay of Pigs, the Cuban Missile Crisis, and the quagmire of Vietnam. In this meticulously researched study, historian Jason A. Perdue draws on newly declassified documents to reveal the critical difference between projected foreign policy—what presidents say—and practical foreign policy—what they actually do. The result fundamentally reframes our understanding of Cold War decision-making and why Eisenhower's "hidden hand" proved more effective than Kennedy's celebrated flexibility. For anyone seeking to understand how American foreign policy works—and why it sometimes doesn't—this book is indispensable.