It is an area of cooperation. The interesting thing about climate change in the Arctic is that it will make our submarines more relevant and give theirs less of an advantage, because theirs can travel under ice for extended periods of times and ours can't. Assuming climate change continues and there's more open water, our submarines will be up there. Since diesel submarines are quieter than nuclear-propelled submarines, we're going to know where the American submarines are. As a result, they may want to have cooperative measures.
On March 25th, 2014. See this statement in context.