The might of the US military no longer guarantees world order. There are new actors and new ecosystems in play.

A holistic approach to addressing violent extremism starts with confronting deep-seated societal issues.

Three of the world’s most influential powers have skin in the game when it comes to preventing another civil war.

Policing online hate speech currently falls into a murky space shared between governments and big tech.

I was twice an enemy to al-Qaeda’s leader, both near and far. His influence in seeding militant Islamists was profound.

The US has declared justice after more than 20 years hunting Ayman al-Zawahiri. But a battle with extremism will go on.

The butterfly effect of the global war on terror has had far-reaching impacts on the freedoms it was meant to defend.

An absorbing new documentary captures the first response of the Bush administration to the horror inflicted on America.

The killing of senior terrorist Abu Mohammed al-Masri on a Tehran street raises questions about al-Qaeda’s ties to Iran.

Why is the world only now hearing about the apparent death of the al-Qaeda scion, and will it hurt the terrorist group?