'Islamic terrorism' refers to terrorist acts committed by Muslim groups or individuals who are motivated by Islamic or Islamist views. Condemned by most Muslims, Islamic terrorism is inspired by the concept of 'lesser Jihad' -- 'holy warfare' against the enemies of Allah and Islam.
The sovereign citizen movement is a loose grouping of, for the most part, Americans who claim that federal and state laws do not apply to them. The FBI classifies some sovereign citizens as domestic terrorists.
Updated: Learn more about al-Shabaab, the Somalia-based Islamist terrorist group behind the September, 2013, attack on a shopping mall in Nairobi, Kenya.
Research resources on religious terrorism
Recent years have seen the re-emergence of the hardline Islamic Taliban movement as a fighting force in Afghanistan and a major threat to its government. We have updated our research resources on the Taliban movement.