 In June 2014, the U.S. re-intervened into Iraq and began airstrikes against ISIL there in response to prior gains by the terrorist group that threatened U.S. assets and Iraqi government forces.This was followed by more airstrikes on ISIL in Syria in September 2014, where the U.S.-led coalition targeted ISIL positions throughout the war-ravaged nation.Initial airstrikes involved fighters, bombers, and launching Tomahawk cruise missiles.