The Iran war is causing fears of a global shipping crisis due to disruptions in the Strait of Hormuz, affecting supplies of bunker fuel essential for maritime trade. Bunker fuel, a low-grade petroleum product, powers about 80% of global shipping. Shortages are expected to raise shipping costs and consumer prices, particularly impacting Asia, which relies heavily on Middle Eastern oil. Shipping companies are adapting by slowing vessels and exploring alternative fuels. The situation is leading to increased interest in greener fuels, although infrastructure remains a challenge.