The situation in Afghanistan can be described as a multinational Non-International Armed Conflict.
The situation in Afghanistan can be described as a multinational Non-International Armed Conflict between NATO, its allies and the government of Afghanistan on one side, and the organised group the Taliban and other terrorist groups, foremost al-Qaeda, on the other. The conflict was one of international character until the fall of the Taliban, when the international forces supported the Northern Alliance in the fight against the Taliban regime. After this the allies have fought on the same side as the government and the conflict is therefore no longer of international character.
DISCUSSION PAPER 2: DRONE ATTACKS, INTERNATIONAL LAW, AND THE RECORDING OF CIVILIAN CASUALTIES OF ARMED CONFLICT, p. 11