Which operation is NATO-led and supports Afghan security forces?

The operation that is NATO-led and supports Afghan security forces is Operation Freedom's Sentinel. This operation is part of the broader process aimed at sustaining international support for Afghan forces and ensuring that they can maintain stability and security in Afghanistan. Freedom's Sentinel focuses on counterterrorism and providing training, advice, and assistance to the Afghan National Defense and Security Forces.

Other operations mentioned, like Operation New Dawn and Operation Inherent Resolve, are focused on different theaters of conflict, primarily in Iraq and Syria, respectively. Operation Odyssey Dawn primarily pertained to actions in Libya and does not involve a long-term commitment to Afghan security forces. Thus, Operation Freedom's Sentinel stands out for its specific mission and being directly tied to NATO-led efforts in Afghanistan.