US officials say three American service members were killed and a fourth wounded in Achin district of Nangarhar Province,Afghanistan on Saturday,10 June 2017.The incident is being labeled a green-on-blue attack,a NATO code word for an enemy infiltrator who opens fire on coalition forces while wearing an Afghan National Defence and Security Forces uniform.The treacherous attack occurred while US and ANDSF personnel were conducting a counterterrorist operation in the district,an ISIL-K stronghold that US and Afghan Special Operations Forces have been focused on for several months now.An Afghan official said ANDSF members shot the gunman dead.*
The Taliban militants claimed responsibility for the incident,calling the perpetrator a "mujahadid,"or freedom fighter.On Saturday,US Vice President Mike Pence mentioned the deaths and offered the American people's thoughts and prayers to the family and friends of the victims.*
ISIL-K and the Taliban had been fighting each other,so it is possible they have begun to cooperate against the US and Afghan forces now.*
ISIL-K is short for ISIL-Khorasan.The Islamist extremists refer to Nangarhar as being their Khorasan Province.In April,two more US troops were killed in action in Achin district of Nangarhar during combat with ISIL-K.*
The US and its NATO Allies are considering upping the number of forces in Afghanistan in light of the persistent militant activity.