By Kate Abnett BRUSSELS (Reuters) – The European Union is reviewing contingency plans for disruptions to gas supply, although countries’ storage and infrastructure should buffer against major shocks, the EU’s energy policy chief said on Wednesday. Escalating tensions between the West and Russia over Ukraine have raised concerns about Russian gas flows to Europe, prompting the European Commission and the United States to investigate alternatives. Kadri Simson, energy commissioner for the 27-nation bloc, said results of the review were due later this month. “It is important that all member state…

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