Persisting dilemmas of big power military intervention
December 31, 2014, 12:00 pm 
In this photograph taken on November 1, 2014, a US soldier looks on as he rakes debris from demolished structures at Bagram Air Base, some 50 kms north of Kabul. NATO formally ended its war in Afghanistan on December 28, 2014, holding a low-key ceremony in Kabul after 13 years of conflict that have left the country in the grip of worsening insurgent violence.