Russia, which cut off gas to Poland and Bulgaria, demands to be paid in rubles European energy ministers, summoned urgently to Brussels on Monday, sought a response to Gazprom's decision to cut off gas to Poland and Bulgaria and spoke of a gradual halt in their oil purchases as part of a 6th package of sanctions against Moscow. “We refused to pay for Russian gas in rubles and Russia cut off the supply to us, but we are safe,” assured Polish Minister Anna Moskwa on her arriv