Russia says it is no longer supplying gas to Poland and Bulgaria after the countries refused to pay for their supplies in roubles. The EU has said it considers the move to be a form of blackmail. How has Russia halted gas flows? Despite the invasion of Ukraine, Russia has continued to supply a large .
Russia's Gazprom sent warning notices to Poland and Bulgaria threatening to cut off gas shipments as of Wednesday, after the two countries refused to start paying for supplies in roubles.