| A bombing outside Kabul airport Thursday that killed 13 U.S. troops left at least 170 people dead and at least 155 injured, according to one person with knowledge of the matter who spoke on the condition of anonymity.
That toll does not include the U.S. service members, and it is likely to rise because many bodies are still irretrievable, the person said. A local affiliate of the Islamic State claimed responsibility for the attack, which marked the deadliest day for American forces in Afghanistan in a decade. | 
