Foreign Affairs | November/December 2018 In a little under three decades, nuclear weapons have gone from center stage to a sideshow in U.S. defense strategy. Since the 1990s, the United States has drastically reduced its stockpile and concentrated on its conventional and irregular warfare capabilities. Nuclear weapons policy has focused overwhelmingly on stemming proliferation to countries such as Iran and North Korea, and prominent political and national security figures have even called for abolishing nuclear weapons altogether. What was once the [...]