By the end of the decade, America’s stockpile of nuclear weapons would leap from some 300 warheads to nearly 18,000 nuclear weapons. Over the next five decades, the United States would produce more than 70,000 nuclear weapons and spend a staggering $5.5 trillion on nuclear weapons programs. In retrospect—and even at the time—it was clear that the H-bomb decision was a turning point in the Cold War’s spiraling arms race. Like Oppenheimer, Kennan was thoroughly “disgusted.” I. I. Rabi was outraged. “I never forgave Truman,” he said.
