Russia is threatening to cut off gas supplies to more European countries.
This morning it announced it would stop exports to Poland and Bulgaria, because they're refusing to pay for it in rubles.
That's because of sanctions in place against Moscow over its invasion of Ukraine.
European Commission President Ursula von der Leyen says the move is another provocation by the Kremlin:
"The latest aggressive move from Russia is another very stark reminder that we need to work with reliable partners and build our energy independence. The era of Russian fossil fuel in Europe is coming to an end".
