War’s more expensive. That’s Colombian President Juan Manuel Santos’ mantra when skeptics balk at paying higher taxes to finance development projects to employ former rebels. After all, the FARC fought the government for a half-century in a war that killed 220,000. The none-too-popular Santos has his hands full keeping former rebels and right-wing militiamen honest while propping up a sagging economy. With details still to be worked out, and a potential referendum in October, keeping peace may be cheaper — but not necessarily easier.