Actually, we are sending several fighter jets to bomb ISIS, right now. Odds are that's what is precipitating these attacks.
No, nutballs who decide to kill soldiers on the street because they are part of an organization that is taking some modest steps to help stop other nutballs from killing more innocents as those nutballs attempt to institute a medieval Islamic thugocracy in as many places as possible
If the crazies weren't mad at the concept of having their Islamist wet dream torn down, then their followers in places like Canada wouldn't be getting the message to go out and kill soldiers in the street. None of that would happen without theocratic wackadoos deciding to kill those who are trying to stop their tactics. The attacks in Canada were precipitated by religion, not by Canada's involvement in trying to stop any army of tens of thousands of religious murders.