In this photo taken on Wednesday, April 3, 2019, a Russian solder stands guard as Pansyr-S1 air defense system on the Kotelny Island, part of the New Siberian Islands archipelago located between the Laptev Sea and the East Siberian Sea, Russia. Russia has made reaffirming its military presence in the Arctic the top priority amid an intensifying international rivalry over the region that is believed to hold up to one-quarter of the planet's undiscovered oil and gas. (AP Photo/Vladimir Isachenkov)
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