In its new Nuclear Posture Review, released Feb. 2, the Pentagon calls for lowering the yield of some existing submarine-launched ballistic missile warheads and reinstating the sea-launched cruise missile program to address threats posed by Russia and China. The recommendations were initially disclosed in a draft of the NPR published by HuffPost, raising concerns the Trump administration seeks to lower the threshold required for nuclear action. But Deputy Defense Secretary Patrick Shanahan, who spoke at the Pentagon Feb. 2, denied...