More On Terrorism

The list is a departure from last year's, which did not list challenges specific to the climate or environment.

While much of the discussion focused on the COVID-19 pandemic, the candidates also veered into national security and defense.

The U.S. Army announced that it is shutting down two of the specialized organizations it stood up after the 9/11 attacks.

The nature of the new threat posed by ISIS that triggered this U.S. response was not described.

It's Official: Sgt. Maj. Thomas "Patrick" Payne will receive the Medal of Honor Sept. 11 at the White House.

Officials denied reports that the U.S. conducted an airstrike in support of the patrol.

The proliferation of anti-tank missiles among terror organizations across the Middle East has become a growing concern.

As this story has evolved, there has been a subtle but important shift in the main actor.

Melzer allegedly sent information about his unit's location and movements to members of the Order of the Nine Angles.

The Navy has recognized 16 people whose heroic actions saved lives during a terrorist attack on a Florida military base.