ISIS

It has been nine years since the attack, and the lessons learned remain relevant to all police officers today

After his trail of terror was halted by a police bullet, he asked to display the Islamic State flag in his hospital room

The NYC attack is a horrible reminder that the United States continues to face the ongoing threat of terrorism from both ideological organizations and lone individuals

Prosecutors said Ahmad Khan Rahimi considered himself "a soldier in a holy war against Americans" and was inspired by ISIS and al-Qaida

The Tunisian man who carried out last year's deadly truck rampage could have been detained and possibly deported months before the attack

A man who fatally stabbed two women outside Marseille's main train station had been detained for shoplifting and released the day before the attack

A man accused in a plot to behead blogger Pamela Geller became consumed by ISIS propaganda because he was overweight, lonely and desperate for an escape from his bleak life, his attorney said

British police made progress Sunday in their investigation of the bomb that partially exploded on a packed subway

The Islamic State group claimed responsibility for the attack, which it said was carried out by an affiliated unit

With advances in communication, transportation and information technology, terrorist attacks don't have to be focused on major cities for visibility and effect

Here's what Garland Officer Greg Stevens learned during his fight for survival in the 'Draw the Prophet' terrorist attack

The back-to-back car attacks could have been far deadlier had an Islamic terrorist cell's base not been destroyed by an apparently accidental explosion this week