In a unique look at business in this war-torn nation, CNBC's Erin Burnett takes viewers "On Assignment: Iraq." America's top commander, General David Petraeus weighs in on the economic war he's waging and former soldiers explain why they're returning to Iraq to invest. Viewers also travel with the CEO of a Salt Lake company selling water in the desert and go on a road show with American investors visiting Iraqi companies and putting money in the country now.