I don't think the missile threat has accelerated, if you will, but it has been gradually evolving over the past several years. North Korea clearly now has the ability to launch a missile to North America. Whether they can effectively mate a weapon with that missile and deliver it with any kind of accuracy remains to be seen. Iran continues to develop even longer-range ballistic missiles.
I don't think the threat has suddenly jumped up to be an immediate crisis, but I think it still warrants our consideration to participate in the ballistic missile defence warning and defence mechanism with the United States. It's something I suppose we could put off for some time yet, but I think there will come a time when we will find ourselves in a position where we will have missed that opportunity and it will be difficult for us to re-engageāto the detriment, I think, of the integrity of our NORAD participation.