Russian gas delivered into Ukraine’s pipelines to end an embargo on Europe cannot be transported onwards, officials said on Tuesday.

Russia halts gas supplies to the Balkans, Turkey and south-eastern Europe, while flows to Austria drop by 90% in a deepening price row

Bulgaria ‘in a crisis situation’ as Russia suspends all supplies to south-east Europe

Oil jumped to a three-week high on Monday after an Iranian military commander called for an oil boycott over Israel’s offensive in the Gaza Strip.