Several U.S. personnel were injured in an attack against a military base in Iraq on Monday, three U.S. officials told Reuters, as concerns in the region mounted following last week's killing of senior members of militant groups Hamas and Hezbollah. The officials, speaking on the condition of anonymity, said the suspected rocket attack took place at Al Asad airbase in Iraq. They said they were citing initial information which could change. "Base personnel are conducting a post-attack damage...