There were no casualties and only minor damage at the residence, the source said.

CNN: Military investigates hostile fire in 'green zone'

Such efforts will likely be influenced by a growing awareness on Capitol Hill and among nongovernmental groups of this potent new source of U.S. foreign-policy leverage and a recognition that it can be exploited largely without the collateral damage to U.S. interests (harm to exports and jobs) inflicted by trade sanctions.

CENTERFORSECURITYPOLICY: Center For Security Policy