European benchmark natural gas prices increase by around 30% after Russia's Gazprom reduced Nord Stream 1's gas supply to Germany to 40% of the pipeline's capacity. Russia blames maintenance problems resulting from Canada's refusal to return equipment that was sent for repair and warns that usage of the pipeline could be completely suspended.
/cloudfront-us-east-2.images.arcpublishing.com/reuters/YEGIHKRHYZLOLPQQIDTFP4ZYWI.jpg "Russian gas flows to Europe fall, hindering bid to refill stores © Reuters")