Canada and the United States enjoy a peaceful coexistence – as allies and trading partners, they tend to cooperate on most important issues. However, one sticking point in their otherwise cordial relationship is a dispute over Canadian territorial claims of the Northwest Passage: coastal waters far above Canada’s northern coast in the Arctic circle. For years, this issue has been largely inconsequential. The region was, and still is, sparsely inhabited, and maritime traffic was essentially nonexistent. Recently, however, the melting of sea ice due to climate change has made the Northwest Passage a more viable route for commercial shipping. As temperatures rise and the ice continues to melt, shipping routes through the Arctic could cut transit times by 40% on major routes like those connecting China and Europe. here