Who knew? The nuclear-freeze movement, an enterprise run from the Kremlin during the 1970s and '80s, is alive and well. The Obama administration wants to push the reset button on America's nuclear deterrent, essentially by defining WMDs down. Under George W. Bush and his predecessors, Democratic and Republican, an enemy that launched a biological or chemical attack could face a retaliatory nuclear strike. President Obama would not use nuclear weapons in such an instance unless the attacker had nuclear weapons as well. "Those threats, Mr. Obama argued, could be deterred with 'a series of graded options,' a combination of old...