I got this from the Dailykos, but they took it from a link to Conservative Bruce Bartlett's website:
Republicans primarily concerned about national security ought to be in the forefront of efforts to raise revenues to reduce deficits, free up domestic saving for domestic investment, and reduce the importation of foreign saving and the trade deficit. But so far they are not. They remain loyal to the Republican obsession with tax cuts and a refusal to raise taxes in any way for any reason. However, I think my national security-minded friends are soon going to discover that massive defense budget cuts will necessarily be a big part of the price that will be paid for not raising revenues.
Right now, the US spends as much on national defense as every other nation in the world combined.