Would they drop the budget to zero during those 18 months?
Would they stop all government spending. No salaries for gov employees, no social programs, no construction projects, no spending at all. That might upset the populace. Plus... they can only buy back what currency is offered, how do they force people to sell back, especially the trillion held by foreign speculators.
LOL... stop spending, take all the dinar away from the Iraqis, then RV making foreigners rich... yeah, that's the plan.