Russian President Vladimir Putin, left, and Alexei Miller, Russian natural gas giant Gazprom CEO, attend a meeting of major investment projects at the Nizhne-Bureiskaya Hydroelectric Power Plant in Novobureyskiy, Russia, on Aug. 3, 2017. Surging energy prices and fear of a Russian invasion of Ukraine are making European leaders think hard about energy security — particularly their decades-old reliance on Moscow for natural gas. (Alexei Nikolsky, Sputnik, Kremlin Pool Photo via AP, File)
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