North Korea has threatened the U.S. with a preemptive nuclear strike. What's wrong with a preemptive strike? Isn't that what the United States did in Iraq? But it wasn't a nuke, you say. Okay, then consider this. If the United States launched a preemptive nuclear strike, how many Republican and Religious Right warmongers would defend it? Probably most of them, especially if the president was a Republican at the time.