Ukrainian President Volodymyr Zelensky has called for “maximum” sanctions targeting Russia in his opening speech at the World Economic Forum (WEF) on Monday. This should include an embargo on Russian energy sources, he said at the annual gathering in the Swiss Alps, where the economic impact of the war in Ukraine is set to be the top agenda item. Many countries have banned imports of Russian fossil fuels. The European Union has agreed on a coal ban, but member states are struggling to find consensus on introducing an embargo on Russian oil. Zelensky expressed gratitude for the international su…