Russia plans to stop natural gas flows to Poland and Bulgaria on Wednesday, making good on a threat to cut off buyers if they refuse Russian President Vladimir Putin’s demand to pay in rubles. European gas prices surged.  

United Nations Secretary-General Antonio Guterres plans to meet Ukrainian President Volodymyr Zelenskiy on Wednesday about a day after he met Putin in Moscow, seeking to revive diplomatic efforts to end the war more than two months after the Russian president ordered the invasion.