U.S. allows Russian oil sanctions waiver to expire amid evolving geopolitical tensions and energy market shifts.

A temporary U.S. sanctions waiver allowing the sale and delivery of Russian seaborne crude oil expired for the third time on Wednesday, following comments made by U.S.

By Timothy GardnerWASHINGTON, June 17 (Reuters) - The U.S. Treasury on Wednesday did not publish an extension of its waiver of sanctions on Russian seaborne oil that ran out at…