A general view of the Exit Glacier is seen at Kenai Fjords National Park in Seward, Alaska, September 1, 2015. President Barack Obama on Tuesday proposed a faster timetable for buying a new heavy icebreaker for the U.S. Arctic, where quickly melting sea ice has spurred more maritime traffic and the United States has fallen far behind Russian resources. REUTERS/Jonathan Ernst? - RTX1QNPC
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