Briefly, when we established safe havens in Bosnia, I made the point that if you're going to establish a safe haven, you have to go out to at least long-range artillery range and sanitize that area. Otherwise, you're just sitting there waiting to be attacked.
On a lesser scale, the same thing will happen in Mali. Just because those weapons systems that can threaten from a distant location haven't shown up yet, these people have sponsors, whether it's Iran, China, Russia, or whoever in the world, and they will provide the weapons necessary to pin down the crusaders and to threaten them.
The best you can do is to defend your compound and patrol out from those locations. I trust that the Canadian Forces will have the capability to do that and sanitize the area out to artillery range—or mortar range in this case, which is fortunately a lot shorter.