Background: The Arctic Ocean is the smallest of the world's five oceans (after the Pacific Ocean, Atlantic Ocean, Indian Ocean, and the recently delimited Southern Ocean). The Northwest Passage (US and Canada) and Northern Sea Route (Norway and Russia) are two important seasonal waterways. In recent years the polar ice pack has thinned allowing for increased navigation and raising the possibility of future sovereignty and shipping disputes among countries bordering the Arctic Ocean.
Definition: This entry usually highlights major historic events and current issues and may include a statement about one or two key future trends.
Source: CIA World Factbook - Unless otherwise noted, information in this page is accurate as of February 21, 2013
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