FASLANE, SCOTLAND - APRIL 13: Anti nuclear activists block one of the entrances to Faslane naval base on the Clyde on April 13, 2015 in Faslane,Scotland. The protest is taking place just weeks before the general election, in which the issue of Trident is likely to play a key role. The Scrap Trident campaign is urging voters to back only those candidates who firmly reject the plan to replace the current Trident system. (Photo by Jeff J Mitchell/Getty Images)
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Getty Images News Jeff J Mitchell