Domestic Terrorism

Lt. Christopher Paul Hasson faces weapons and drug charges.

Two former officials who led the fight against ISIS are warning about a new threat: homegrown white nationalist terrorism.

Lt. Christopher Hasson's alleged activities don't reflect on Coast Guard values, commandant says.

Lt. Christopher Paul Hasson allegedly had a target list that included politicians and media personalities.

A Coast Guard lieutenant is accused of plans to "murder innocent civilians on a scale rarely seen in this country."

Authorities at the Pentagon found at least two packages suspected of containing ricin, a spokesman said Tuesday.

Everitt Aaron Jameson, 26, faces one count of attempting to provide material support to a foreign terrorist organization.

The U.S. must be prepared for more attacks by ISIS-inspired loners as the group's battlefield losses mount, officials say.

House and Senate Republicans were locked in an escalating standoff Friday over legislation reining in the National Security...

The Veterans Affairs Medical Center in Orlando is providing emergency mental health assistance to people affected by the...