Ezra Klein suggests we start really paying for war

Not a bad idea, with one proviso: we don't need to pay for the whole war with taxes and spending cuts. Big wars in the past required borrowing. The same purpose, keeping us out of wars that aren't worth a few bucks more being withheld every paycheck to us, would be served if we had to pay for a substantial amount of the cost of the war in new taxes or spending cuts.