The claim states that 'The US is lifting sanctions against Iran and Russia regarding oil for another thirty days.' None of the provided evidence (web search results or Wikipedia entries) mention any recent lifting of sanctions against Iran or Russia regarding oil for a thirty-day period. The evidence mentions negotiations regarding Iran and the US (Wikipedia) and past relations between Iran and Russia (Wikipedia), but it does not confirm the specific action described in the claim. Since the claim is not supported by any of the provided sources, and no source directly contradicts it, it must be marked as single_source based on the lack of corroboration, though the evidence provided is insufficient to confirm the claim's premise.