Members of Egypt’s jihadi movement played important roles in inspiring and plotting the 9/11 attacks. Egypt still struggles with some of the factors that gave rise to such extremism.

A look at the post-9/11 war powers law that the Trump administration could use to justify conflict with Iran.

Ayman al-Zawahiri leaves behind a robust network of strategically aligned but tactically independent al-Qaeda affiliates operating in Africa, Asia, and the Middle East.

Far too little is known about how the January 6, 2021, attack on the U.S. Capitol happened. A bipartisan investigation should address this, to dispel falsehoods and to help prevent such an assault fr…