The only thing I can think of for a portion of that is to, quite literally, rip away all military operations going on in Iraq and Afganistan. But that would give us what? 1-2 trillion. Still doesnt help much.
It won't work on a couple of levels. The deficit is nearly 2 trillion this year alone. It's projected to be 10+ trillion over ten years and, again, this is without the health care. So, even if he saved that, it wouldn't be close to enough. It's simply do damn massive.
Speaking of Health Care....did you know Congress has exempted themselves and federal employees from the bill their putting together? That should tell you all you need to know about that.
The other problem is the political risk:
(1) He and many Democrats have often called Afghanistan the just war and the Iraq one as the war of choice. He campaigned on that idea, which puts him in a bind on Afghanistan. It would also further reinforce that both he and his party are weak on defense.
(2) If he does that solely on the basis of the debt he's run up, it makes him look totally irresponsible and doubly so if things go to hell once we pull out. It be really tough to tell the American, Iraqi, and Afghan people, that we bailed on them because he couldn't control his spending.
(3) Despite their rhetoric on Iraq, the Dems and Obama don't want to see either failure there or in Afghanistan, if for no other reason, they don't want it hung around their necks. If he pulls out because of that and either do fail, they will get blamed, he'll be a one term president, and if may be decades before they can shed the label of weak on defense.
(4) North Korea and Iran. The problem here is that even if he pulls, he may still be spending money militarily depending how far Kim Jong Il wants to take this. The other is thing that one reason I think the North is behaving the way it is is because it doesn't believe the world community or Obama have the balls to stop him when it really comes down to it. And I think this is justified because they haven't had those balls for the last twenty years and now he's acquired his trump card in a nuke. Think of how Kim Jong Il will view it if he sees Obama pull out because he doesn't have the money to maintain it.
If I had to guess, its going to be a combination of the above. We'll get military cuts, higher tax (t hey may already be in the health bill), sell more debt, and monetize what he can't sell.
The biggest problem politicians of all parties have: It's far easier to create a new program or increase spending on an existing one than it is to gut one. People will go ballistic even if you simply cut the rate of growth (vs. a genuine cut). Actually, when most politicians tell they're cutting spending somewhere, that's really what they mean: they're just cutting the rate of growth.