“American Special Operations troops and on-the-ground military advisers from the NATO coalition joined Afghan forces trying to retake the northern city of Kunduz from Taliban militants Wednesday,” according to The Washington Post .  

“Personnel from the U.S.-led coalition in Afghanistan were on a mission near the Kunduz airport, where hundreds of Afghan troops had gathered after retreating from the city, when they were engaged by insurgents and called in an airstrike… The increased support from the coalition comes amid growing signs that Afghan forces are struggling to repel the Taliban fighters, who were able to seize Kunduz in a lightning strike Monday, dealing a major blow to Afghanistan’s Western-backed government.”  

“An Afghan official from Kunduz confirmed that coalition advisers are engaged in the effort to drive the Taliban from the city… The rules of engagement for U.S. forces remaining in Afghanistan allow them to fight if they are threatened by insurgents.”