U.S. targets in Iraq and Syria have been attacked at least 23 times since Oct. 17, a senior U.S. defense official said Monday.
The attacks have been conducted primarily with rockets and drones, said the official, and 14 have been against U.S. targets in Iraq and nine against U.S. bases in Syria. The official did not report any U.S. injuries.
At least four of the attacks have come since the U.S. launched retaliatory strikes on two Iranian-linked targets in Syria on Thursday.