Lots of readers ask whether Obama would really retalliate with nukes if North Korea attacked America or one its allies. Obviously, no one knows the answer and no one wants to find out for sure. But I do think it’s a reasonable question. Would Obama nuke Pyongyang if the Norks nuked Seoul? I kind of doubt it. Would he nuke Iran if LA were in ruins at Iranian hands? More likely, but I’m not positive about that either. It’d be a good plot device for a political novel: a liberal, anti-nuke, president refuses to retaliate after a nuclear strike. Would the public demand his impeachment? Would the Congress declare war and force his hand? Questions best left for fiction and academic debate, I think.