There has already been much written about Obama's change to the U.S. nuclear posture, so I'm going to be unusually brief. The changes are unnecessary, idiotic, and typical cluelessness by Obama. But they aren't surprising coming from someone whose main foreign policy ideas are based on appeasement, empty talk and wishful thinking. But how dangerous are they really?
If the U.S. is actually hit by a devastating chemical or biological attack, a nuclear response will probably be on the table anyway, no matter what our official nuclear posture states. As president, Obama has the authority to change this policy. A future president can change it right back. It's not the same as a massive new entitlement program that is immensely difficult to reverse. Some have pointed out that Obama's policy undercuts the whole idea of deterrence. That's true, but having a fool like Obama in power, someone who deliberately projects weakness to our enemies, is far worse for deterrence than any individual policy. The sooner he's out of office the better.