New ISIS threat in Afghanistan prompted US warning in Kabul: Defense officials

A new threat from the Islamic State’s (ISIS) branch in Afghanistan prompted a new warning from the U.S. Embassy in Kabul that urged Americans to not come to the besieged airport in Kabul, officials confirmed to Fox News on Saturday. "Because of potential security threats outside the gates at the Kabul airport, we are advising U.S. citizens to avoid traveling to the airport and to avoid airport gates at this time unless you receive individual instructions from a U.S. government representative to do so," the embassy warned on Saturday. -- More...