It ought to be to protect the lives of Canadian nationals. If he could avoid fuelling dangerous "war of civilization" fantasies, that would be a bonus.
Here is a website with horrific pictures of the rape of Lebanon. You can sign an online petition for all the good it will do. Better for Canadians to write their MPs. The Tories should be brought down on this. Quebec might vote for lower federal taxes, but I have faith it will never vote for this.