Trevor Aaronson

A scathing ruling in British Columbia says “the world has enough terrorists. We do not need the police to create more out of marginalized people who have neither the capacity nor sufficient motivation to do it themselves.”

Did Omar Mateen fall through the cracks because FBI agents are pursuing thousands of assessments nationwide under a policy to pursue any and all leads, no matter how ridiculous?

The attack on a gay club in Orlando — the largest mass shooting in U.S. history — demonstrates how potential threats are escaping the FBI’s vast counterterrorism dragnet.

After one woman broke his heart, a young Michigan man turned to another woman, who tried to steer him toward a violent response. Both women were FBI informants.

After falling in love with an FBI informant, a 21-year-old Michigan man was accused by federal prosecutors of supporting the Islamic State.

Prosecutors failed to disclose key evidence that suggested an informant had enticed Eric McDavid with the prospect of a romantic relationship.

Twenty-three-year-old Harlem Suarez, also known as Almlak Benitez, hardly looks the part of an Islamic State fighter. But he's the latest in a long line of questionably competent "terrorists" targeted by the FBI.

Evan Kohlmann is the U.S. government’s go-to expert witness in terrorism prosecutions and an expert on cable television. Now, defense lawyers are raising questions about his classified work for the FBI.

A longtime FBI informant, Craig Monteilh has acted as a Russian hit man, a Sicilian drug trafficker and even a white supremacist. Now he's helping undermine the cases he once helped make.

A new documentary, <em>(T)ERROR</em>, reveals the weaknesses and bungling behind a terrorism investigation that relied on informants.