Europe’s newest weapon in the battle of wills with Russian President Vladimir Putin lies buried deep beneath the ancient oaks and rolling green pastures of this quintessentially English village. There, wedged in the bedrock, lie vast quantities of oil and natural gas — enough, when combined with the spoils of hundreds of other sites like it, to help kick Europe’s addiction to Russian energy. Or so says David Cameron. Ever since Russian forces took hold of Crimea last month, the British prime minister has been leading a chorus of conservative politicians and energy executives in a refrain they believe will spark a shale gas revolution in Europe: Frack, baby, frack. The push for a European boom in fracking — shorthand for hydraulic fracturing — has been underway for years, but it has taken on new urgency in recent weeks as fears grow […]