In this Nov. 21, 2014, file photo, Polish and British troops take part in a joint military exercise in Swietoszow, Poland, with more than 1,000 British troops participating. Across many nations of eastern Europe ordinary people are heeding a call to receive military training to learn what to do in case of war, and backed by NATO forces on a mission to reassure citizens that they're safe from Russian aggression. (AP Photo/Czarek Sokolowski, File)
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