The U.S. is building nuclear weapons at a glacial pace: At the current pace, it will be decades before the current arsenal is replaced. This is unacceptable. By operating at only a fraction of the level of production capacity that the U.S. did during the Cold War—and, subsequently, only producing a tiny fraction of the warheads that the United States produced in the Cold War—the U.S. runs the risk of undermining the credibility of its deterrence. Given the current security environment, the risk of a nuclear war is far higher—and has far greater consequences—than the risk of an environmental accident at a nuclear weapons lab. America must decide where it needs to best buy down risk.