ISIS , al - Nusra Front and the Khorasan Group all spawned from al Qaeda . The U.S. launched airstrikes against ISIL and the Khorasan Group this week . Al - Nusra says its leader was killed in the strikes ; the group has not responded .
ISIS , al-Nusra Front and the Khorasan Group all spawned from al Qaeda . The U.S. launched airstrikes against ISIS and the Khorasan Group this week . Al-Nusra says its leader was killed in the strikes ; the U.S. has not confirmed .