Lasrick writes: Since developing nuclear weapons in 1945, the United States has maintained the right to use them first against another country, regardless of whether that country launched a nuclear attack at the US. Over the past several months President Obama has considered changing that “first-use” optional policy to one under which the US declares that it will only use nuclear weapons in response to a nuclear attack, a 'no-first-use' posture. Press reports now assert that key members of the president’s cabinet all opposed the move, including Defense Secretary Ashton Carter, Secretary of State John Kerry, and Secretary of Energy Ernest Moniz. There are reasonable arguments on both sides of the no-first-use debate, but unfortunately, there may be negative consequences for raising the issue publicly and then rejecting it. Nuclear security expert James Doyle explains what those consequences are.