I do. I don't think it's a 100% perfect system, but it has a limited ability to work. It's not designed to account for every conceivable possibility. To do that, you would need a much larger system, and a much larger system, I think, would potentially be destabilizing.
I would just point out that I think it's logically inconsistent to suggest on the one hand that the system doesn't work but also that it's going to be a threat to international stability on the premise that it does work. It has to be one or the other.
I happen to think that the system is effective in terms of working towards the type of threat specified. Beyond that, though, it's not going to be a conclusive security blanket, but it would provide Canadians, if we were to participate, some level of assurance that Canadians may have the chance to be defended against that type of missile. If we don't participate, there's none.