At least 15 people have now died following what investigators say was a lone-wolf terrorist attack carried out by a U.S. Army veteran in New Orleans over New Year’s. The suspect publicly declared his allegiance to ISIS prior to the attack, and he flew an ISIS flag from the rented vehicle he used to run over civilian revelers on Bourbon Street. He was killed by police officers after he emerged from his vehicle wearing body armor and holding an assault rifle. Investigators currently do not believe that the suspect belonged to any larger ISIS cell or operation, although they are still investigating any potential leads.

Watch the above video as Straight Arrow News contributor Matthew Continetti reviews the attack and argues that this should be a call for U.S. agencies and officials to refocus on the threat of ISIS, which Continetti and top U.S. defense figures warn may resurge unless it is confronted.

The following is an excerpt from the above video:

This aimlessness and passivity create openings for terrorists. It gives them the sense of impending victory. I’m not arguing that we re-invade Afghanistan tomorrow, nor am I saying that a more assertive U.S. foreign policy would end every threat to the homeland. My argument is that the way to reduce the ISIS threat, foreign and domestic, is to take the fight to the evildoers.

Don’t pretend jihadists can be left to their own devices. Put them on the defensive, thin out their ranks, dry up their finances, keep them on the run, then ISIS’s ability to inspire will wane, and justice will be done for the people of New Orleans.