Al Qaeda confirmed that the US killed its military commander for the "Khorasan," or Afghanistan and Pakistan, in a drone strike in Waziristan in early 2014. Sufyan al Maghribi, a Moroccan who served as the group's military chief in Afghanistan and Pakistan, is one of many unknown al Qaeda leaders who "work in silence and leave in silence," according to a prominent jihadist who reported his death one year ago. Maghribi was also a contributor to the jihadist group’s Vanguards of Khorasan magazine. Maghribi's death was confirmed in a message released yesterday by al Qaeda that featured Ayman al Zawahiri....