This is what our future will be like...living in Israel.
Guerilla warfare. That was my first reaction when I heard about using a moving car as a weapon, and when the Ottawa assailant, moved from one act of murder onto another highly unlikely one that involved stealing a car and shooting the entrance guard onto where the parliament was meeting, I saw he had run through in his minds all types of scenarios he could take advantage of. And the guy in Queens, using a carpentry tool to hack away at cops posing for pictures, is another instance of unexpected acts of violence in unexpected places.
They have the advantage when the do not have to amass troops on a killing field.