As the Islamic State has crumbled in its core territory in the Middle East, the extremist group has pressed individual supporters to carry out vehicle attacks in the West.
The lethal assaults have traumatized European cities for more than a year, and authorities are pointing to a similar motivation in the New York City attack that killed eight people on Tuesday.
New York Gov. Andrew Cuomo said the attack was a "classic case of a radicalization of a domestic jihadist who associated with ISIS and this is their new playbook. Very simple. Use a vehicle to cause harm."