Tucked into an alleyway off Najafi Street in Mosul’s Old City is a small red and gold sign advertising a bookstore: Maktaba al-Sham. Not long ago, it was one of countless bookstores along the wide avenue lined with arched windows and doorways. Since the early 1900s the street has been a bustling cultural hub where intellectuals meet to sip tea, debate friends, and buy books. But today Najafi Street is in ruins, burned by the ISIS fighters who occupied Mosul and bombed by a United States-led coalition in an effort…