Brent fell below $100 and WTI below $90 after five straight sessions of declines, driven by reported US-Iran talks and Saudi Arabia's first steps to restart the 7 million barrel-per-day East-West pipeline, which could reach significant flows by Saturday. Prices are still more than 60% above end-last-year levels, and the article warns a deal is far from certain, with past ceasefires having failed. For a Thai SME, fuel and transport costs are still high; do not assume a sustained drop yet. Avoid locking in fuel-dependent pricing or long-term contracts on the back of one week's decline, and keep watching diesel and freight quotes over the coming weeks.