An Afghan man arrested on charges of planning a terrorist attack on Election Day worked as a security guard in Afghanistan for the CIA, two sources with knowledge of the matter told NBC News. Nasir Ahmad Tawhedi, 27, was arrested on Monday in Oklahoma and accused of plotting to kill Americans with an assault rifle on behalf of ISIS. Court documents said he had contributed to an ISIS charity in March and accessed online ISIS propaganda, but they did not say whether he was radicalized before or after he came to the U.S. in 2021. A senior law enforcement official...