I think that militarily nothing has changed much from the last time we looked at things. Militarily I think the advice has been constant, or at least has been in the same direction. Again, the advice this time would be rendered by the Chief of the Defence Staff, not me. I only have a part of this. Other than North Korea, which has visibly progressed their own development of their own ballistic missiles, Iran has an intercontinental missile capability, not nuclear, but an ICBM, that can reach North America. I'm not sure if that was in place 10 years ago, but we have seen proliferation of those missiles. That probably is what has changed lately.
On April 19th, 2016. See this statement in context.