Sovereignty has been a major and obsessive ingredient in Canadian defense policy. "Arctic Leverage: Canadian Sovereignty and Security" explores its historical development. How have territorial sovereignty concerns affected Canadian defense policy and its defense relationship with the United States? With the Arctic Archipelago, Canada possesses a geostrategic buffer between two superpowers, and claiming jurisdiction over its waters, has run afoul of U.S. policy that designates the Northwest Passage as a strait vital to the interest of the United States. French Caldwell examines Canada's...