We have entered a new phase in Islamist terror. Fifteen years after 9/11, our enemies have regained their momentum.

We are in a struggle against the forces of radical Islam and terror, which must be defeated for our children and our grandchildren.

This is an unprecedented pace of terror in modern times. And so, to say they're on the run absolutely defies reality.

The threat is real, and it comes from the Internet. This is a new generation of terrorist. This is not Bin Laden in caves with couriers anymore. This is what the new threat of terrorism looks like.

Violent extremism is going viral, but our response to it is moving at bureaucratic, sluggish speed.

I think it's important to note that after the airstrikes began in Iraq and Syria, ISIS began a very aggressive social media campaign calling for these types of attacks, these lone wolf attacks.