WSJ: Undercover Taliban agents—often clean-shaven, dressed in jeans and sporting sunglasses—spent years infiltrating Afghan government ministries, universities, businesses and aid organizations. Then, as U.S. forces were completing their withdrawal in August, these operatives stepped out of the shadows in Kabul and other big cities across Afghanistan, surprising their neighbors and colleagues. Pulling their weapons from hiding, they helped the Taliban rapidly seize control from the inside. Click here to read more (external link).