Day after day scores of bodies litter the streets of Baghdad. To staunch the violence, the U.S. has spent billions to “stand up” the Iraqi forces. In Gangs of Iraq, a joint production of FRONTLINE and the “America at a Crossroads” series, FRONTLINE takes a hard look at how the four-year training effort has fared and how the coalition-trained forces have themselves been infiltrated by various sectarian militias. Now, with... see more