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President Obama is in Alaska this week and will attend a conference on climate change and the future of the Arctic, with Russia's military build up in the region high on the agenda. At the closest point, two islands - one Russian, one American - are barely two miles apart. Humphrey Hawksley was given rare access to the Eskimo community on the American island of Little Diomedes. (Photo: Big Diomede Island in Russia, as seen from Little Diomede Island in the U.S. state of Alaska. Credit: George A. Kalli / AP)