Ayman al-Zawahiri

Bounty flyer offering $25 million for information about al-Qaeda leader Ayman al-Zawahiri. Photo credit: US State Department

Why al-Zawahiri’s death should focus attention on nuclear terrorism—foreign and domestic

By Scott Roecker, Nickolas Roth | Analysis, Nuclear Risk, Nuclear Weapons

A scene from a Ventura County, California public service video on preparing for and responding to a nuclear terrorism event.

Twenty years after 9/11, terrorists could still go nuclear

By Matthew Bunn | Nuclear Risk, Nuclear Weapons