From what I can tell, the Dem voices are already starting to use this. Both Obama and Clinton have more than hinted that they'll be looking to shutdown some or all of the war spending and use that 'savings' to fund their other initiatives. I think that argument will win votes, but it won't hold out in the long run. Extricating from a conflict, and maintaining some level of diplomatic efforts and humanitarian aid, is likely to cost more than anyone wants to admit.