Seriously? That's the supposed reason to stop the latest START treaty? Krauthammer, did somebody put your columns in a time capsule from August of 2000 or something?
Never mind that he calls the tax bill "bipartisan", when it was a big Republican victory. That's why they were willing to hand over DADT, which threatens the wealthy 0.1% that Dubya aptly called "his base" not one whit. They traded away the TheoCon's interests to serve the moneymen's interests, just as they have before and will again. It barely matters; Krauthammer is only bringing it up as "punch a hippy" fodder, a paen to the "bipartisanship" that he wouldn't give a shit about if Barry had an "R" beside his name.
But missile defense? You've gotta be kidding. Even if North Korea is a bit more unstable than it used to be, it's been made patently clear that America's conventional war advantage ain't what it used to be either. Maybe if this WERE 2002 or so, it might make sense, but American predominance has kind of had a difficult run since then.
Let's be honest. If Russia wanted to ruin America, they wouldn't need nukes for it. All they'd need to do is completely economically align with China and start really tightening their grasp on Eastern Europe, and there's a whole host of economic consequences that would make the White House sweat.
Why on earth would they need to, though? Putin has to see what's going on. Cold-blooded or no, he's possibly the most clear-sighted state leader the world has right now. There's no way that he's missed that America's wealthiest and their various mouthpieces (like Krauthammer!) are tearing down everything else in their quest to extract whatever cash can be produced by the other 99.9% of Americans. There's no way he's missed just how disastrous Obama's Administration has been so far, DADT or no DADT.
He, and everybody else that may (or may not) wish America harm, can just sit tight and let all the work be done for them. The danger isn't nukes. It's people like Krauthammer himself.