But prices have been falling since then, hitting 73 euros on Monday -- 50 percent down from a month ago and the lowest level since before the war on February 21.Europe was previously Gazprom's main export market but supplies have been drastically reduced because of sanctions following Russia's offensive in Ukraine in 2022.European storage levels were at 83 percent on Monday, reducing the need to buy more gas for now."He could send less (gas) but he could also send more to certain destinations in the hope of dividing European countries," said Thierry Bros, an energy market analyst who teaches at the Sciences Po school in Paris.Europe would struggle to fill up stocks this summer if it does not receive 30 billion cubic metres of Russian gas, Bros said."