How is the Islamic State similar to a criminal street gang? Here are a few reasons why - including each group's bureaucratic but spread-out structure.
Authorities fear that a far-right politician could be in Syria fighting with the Islamic State or another jihadist group.
The Islamic State group has been driven from more than 96 percent of the large parts of Iraq and Syria it once held, crushing its goal of establishing a "caliphate" that challenges existing borders.
The Islamic State group has declared that the New York City bike path terrorist attacker was a "soldier of the caliphate."
Egyptian security forces suffered significant losses last week when they attempted to raid an alleged hideout belonging to the Islamic State.
A man who described himself as a sympathizer of ISIS faces terrorism-related charges stemming from a purported plot to bomb a Miami-area shopping mall.
The U.S. military launched six drone strikes against Islamic State positions in Libya on Friday, months after militants were driven from safe havens there.
A man believed to be an American citizen who was fighting with Islamic State militants has surrendered in Syria and is now in U.S. custody.
Terror threat snapshot: The new report states that there were 215 homegrown jihadist arrests in the US since the September 11 terror attacks in 2001.
U.S.-backed forces in Syria announced a fresh offensive around the Islamic State's most important remaining stronghold: Eastern Syria.