War with Iran could cost the United States nearly $1 billion a day, according to a think tank that has broken down the average cost.Experts say the specific cost of the war is unpredictable, but the average costs can be applied to every day of the war. Lindsay Koshgarian, program director of the National Priorities Project at the Institute of Policy Studies, told CNN the exact cost is impossible to know.Koshgarian said, "This is highly unpredictable and so we won’t know the cost of it until it’s...