Brent rose to about $94.39 and West Texas Intermediate to about $87.06 a barrel (data as of 21 Aug 2026), up six sessions in a row. The US is due to announce new economic sanctions on Iran on Monday 24 Aug, which could widen to Iran's trading partners including China. Kpler says about 41 million barrels of Iranian crude are stuck on tankers near the Strait of Hormuz. For a Thai SME, fuel and diesel costs and transport or logistics surcharges may tick up this quarter. Review fuel-heavy cost lines and supplier price-adjustment clauses, and watch the pump price in the coming weeks.