It has been two months since Younes Abouyaaqoub rammed a van into a crowd of shoppers in Barcelona’s Las Ramblas tourist area. Hours later, five members of the same terrorist cell drove a car into a crowd of pedestrians in the nearby town of Cambrils. The attacks killed 16 people and injured 137. The Spanish attacks mark a trend that is increasingly common in Europe: Islamist terrorists carrying out attacks by acquiring a truck, van, or car and turning it into a weapon.
If vehicular attacks are stopped, terrorists will switch to bombs. If bombs are stopped, they will change to gun. If guns are not available, they will use acid attacks. If acid attacks are stopped, they will switch to knives. If knives are outlawed, they will use rocks.