Ukraine, Stalled on the Battlefield, Targets Russia’s Oil Industry
www.nytimes.com
Ukrainian drone strikes have been able to hit refineries deep in Russian territory, indicating a new vulnerability. But it is unclear if that will affect the fighting.

Mr. Ernst and Mr. Krutikhin noted that, unlike in other oil infrastructure such as pipelines, a lot of complex machinery and sophisticated engineering goes into refineries, and they can take several months to fix. Some analysts say the repairs could take longer than usual because sanctions prohibit Western sales of certain components to Russia.