The Hunt: What was going through the mind of the Las Vegas shooter?

Understanding the Las Vegas shooter

US military responds to Russian blame for death of one of its generals in Syria

Anatomy of a Russian attack: Attempts to target US began immediately after Soviet Union’s collapse

The Hunt: US intelligence community shifting to fight next generation of terrorism

Anatomy of a Russian attack: From robocalls to hoaxes, a look at tactics used

Anatomy of a Russian attack: First signs of the Kremlin’s attempt to influence the 2016 election

The Hunt: 16 years after 9/11, why terrorism is still a big concern?

Fading memories of 9/11, different tactics present new terror threat

The Hunt: How do extremist groups attract everyday people to commit acts of terrorism?

Cyberterrorists targeting first responders

The Hunt: Airstrike launched against Russia, Syria and Hezbollah-sanctioned ISIS convoy

The Hunt: ISIS fighters in Syria growing desperate

The Hunt: Retiring diplomatic security agent issues warning

ISIS trains returning European sleeper cell operatives in clandestine camp