In its new Nuclear Posture Review , released today, 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 today, denied...