ISIS says it controls several buildings at the Baiji oil refinery . Iraqi government security officials say Iraqi forces remain in full control . The U.S. military has been conducting airstrikes against targets inside Iraq since last month to try and stop ISIS.
ISIS says it controls several buildings at the Baiji oil refinery . Iraqi government security officials say Iraqi forces remain in full control . The refinery , Iraq 's largest , has long been a lucrative target for militants .