The US has allowed a waiver on sanctions for russian oil sales to expire, a move that comes amid surging fuel prices reportedly linked to a conflict involving Iran. However, the situation is unclear, with some reports suggesting the US has temporarily lifted sanctions on Russian oil, while others indicate that some countries, such as Britain, are easing sanctions on Russian oil. Additionally, there are reports of other developments, including China's oil majors resuming purchases of Russian oil and a US allowance for a short-term sale of Iranian oil.