"even though our primary missions is train, advise, and assist, we’ve actually retained a U.S.-only – this is actually not coalition, but it’s a U.S.-only unilateral role of being able to conduct counterterrorism missions in Afghanistan primarily against al-Qaida and its remnants, but ISIS would be fair game as well. What we’re not doing counterterrorism operations against is the Taliban. We don’t – we actually view the Taliban as being an important partner in a peaceful Afghan-led reconciliation process. We are not actively targeting the Taliban. "[1]
http://fpc.state.gov/249194.htm