“
On April 16, 2015, Abdirahman Sheik Mohamud, a Muslim who lived in Columbus, Ohio, was indicted for plotting to carry out a jihad terror attack in the United States—he had talked about attacking a military base and murdering American soldiers “execution style.”20 Mohamud had returned to the United States from Syria, where he had received training from Jabhat al-Nusra, the al-Qaeda group that Ayman al-Zawahiri had insisted that ISIS defer to in Syria—leading directly to the split between the two groups.
”
”
Robert Spencer (The Complete Infidel's Guide to ISIS (Complete Infidel's Guides))