The document discusses territorial disputes in the Arctic between the US and Canada. Secretary Clinton says if countries coordinate their efforts, they can avoid challenges in the Arctic. However, Michael Byers may disagree with Clinton's view. There is controversy over whether the Northwest Passage through Canada's Arctic islands is an international strait or part of Canada's internal waters. As the climate changes, melting sea ice is increasing access to the Arctic and countries want to assert control over newly accessible lands and sea lanes.