So far this winter, Europe has been the biggest buyer of U.S. liquefied natural gas (LNG), and despite the fact that the key reason has been profit rather than politics, U.S. LNG cargoes have been increasing its share of a market dominated by pipeline supplies from Russia and Norway, a Reuters analysis showed on Friday. U.S. officials and LNG industry managers have expressed confidence that the United States can compete with Russia on the European natural gas market, of which Gazprom holds more than a third. The U.S. Administration has been keen…