I want to thank Professor Charron and Professor Sokolsky for being with us again and talking about this important issue. Both of you have expertise in the Arctic. We're hearing about the Russian build-up of their military assets in the far north. Last year we saw them, in the matter of a couple of weeks, put together military exercises that involved over 80,000 troops and also had all three elements of the Russian armed services involved.
Do you see that as a threat and a reason we should be more engaged, from a military measure, in the Arctic?
You mentioned, Professor Charron, that there are a number of other tools than NORAD and the military. Maybe you want to build upon what some of those other tools are that we need to be looking at in the defence of North America.