Washington Post: "The U.S. military anticipates the Arctic will become "ice-free" for several summer weeks by 2030, possibly as early as 2013. "

As Arctic melts, U.S. ill-positioned to tap resources

Like the rest of the 2.5-million-square-foot area at the top of the world, this chunk of the U.S. Arctic is melting quickly because of accelerated climate change. The prospect of newly thawed sea lanes and a freshly accessible, resource-rich seabed has nations jockeying for position. And government and military officials are concerned the United States is not moving quickly enough to protect American interests in this vulnerable and fast-changing region.
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The Obama administration, like the Bush administration before it, has identified the Arctic as an area of key strategic interest. The U.S. military anticipates the Arctic will become "ice-free" for several summer weeks by 2030, possibly as early as 2013.