Iraq Army Interdicting Iranian Operatives

Good news is that the Iraqi Army is interdicting Iranian operations in the South and the U.S. can begin to stand down. The bad news is that the U.S. has been clever enought to train and run and not attack Iran. However, once the re-armed Iraq is ready to deploy, another war with Iran is more likely. Will the U.S. be largely withdrawn by the next war or will the U.S. be drawn back into the conflict?