Natural-gas prices in Europe shot higher Thursday, a day after Russia unveiled a set of sanctions on energy companies operating on the Continent that could further threaten supply.
Among the companies sanctioned by Moscow were former subsidiaries of Russian state gas giant Gazprom PJSC in the European Union and the Polish owner of a key stretch of pipeline. The restrictions could reduce Europe’s flexibility to import Russian gas through routes beyond Ukraine, though the full implications on gas supplies weren’t yet clear, analysts said.