inputs: hypothesis: Fallujah is not far from Karabilah. premise: The surge in violence has occurred while U.S. Marines and Iraqi troops battle insurgents near Karabilah on the Syrian border. British and American warplanes pounded targets to support a 1,000 Marine force. A Marine statement also said patrols in the devastated city of Fallujah came under attack Sunday. According to the statement, 15 insurgents were killed while the attack was repulsed.