News What is ISIS-K? Islamic State terror group carried out Kabul attack that killed 13 U.S. troops August 27, 2021 Tom Vanden Brook, Josh Meyer and Rebecca Morin, USA TODAY Comments Off on What is ISIS-K? Islamic State terror group carried out Kabul attack that killed 13 U.S. troops U.S. officials had been warning of the threat of Islamic State attacks as crowds of people have gathered around the Kabul airport.