The United States is on the cusp of launching an unnecessary, expensive, and potentially dangerous plan to modernize its strategic nuclear forces, helping stimulate what is being called a “new nuclear arms race.” Before Washington starts down this path, it needs to step back and ask, “How much is enough?” or, as the Cold War adage went, “How high do we need to make the rubble bounce? The United States can deter any country from using nuclear weapons against America and its treaty allies with a nuclear force that is far smaller, less destabilizing, and less expensive than the one the Pentagon is planning to build.

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