An Afghan security personnel keeps watch near the largest US military base in Bagram after an explosion on November 12. Four people were killed in an explosion inside the largest US military base in Afghanistan, NATO said, with local officials blaming a suicide attacker posing as a labourer for the major security breach.
4 Americans killed in blast at US airfield
01:53 - Source: CNN

Story highlights

It is unclear how the Trump administration will steer policy in Afghanistan

There are 9,800 American service members in Afghanistan

Kabul, Afghanistan CNN  — 

Secretary of Defense Ash Carter made an unannounced visit to Afghanistan Friday, a trip that comes amid major questions regarding the future of America’s 15-year-long mission there.

Carter is set to consult with Afghan President Ashraf Ghani at the presidential palace in Kabul and meet with US military commanders and thank the troops at Bagram Air Base.

The Obama administration had originally intended to remove nearly all US troops from the country before leaving office. But faced with a lingering Taliban insurgency, the emergence of a local ISIS affiliate and the continued presence of al Qaeda terrorists, Obama revised the plan several times, eventually opting to hand-off the