Crude oil supply is tight and US military action would push it higher. Refinery capacity is offline in Russia and the Gulf, and Iran controls two straits, straining the hydrocarbon economy, while both conflicts look set to continue. A US airstrike on Sana'a in the next two months looks likely, making US shipping a target and inviting escalation by Iran and its proxies. Any US action should add about $10 to Brent and $2 to gasoline and diesel, whose supply damage is irreversible near term. x.comÂ