There will also be other geopolitical consequences if climate change allows the northern shore of Russia, currently in a permafrost condition, to be open to shipping. Similarly, what does it mean for shipping and trade with Asia if climate change allows the northern shore of Canada to be open to shipping all year round? What future military and naval re- quirements will be needed to protect such new and highly lucrative lines of maritime communication? What will the impact be on American–Canadian relations? Of all global trends, it is climate change that will put renewed emphasis on geostrategy in the strategic and.