ExxonMobil and Chevron report major profit increases tied to higher global oil and product prices as the U.S.-Iran conflict disrupts shipping and refinery operations. With fighting in its sixth month, the Strait of Hormuz is largely blocked, constraining the flow of oil and natural gas that had carried a significant share of global supply. Brent crude rises from roughly $70 to above $100 a barrel during March, April and May, and at one point reaches about $126.

Both companies describe how the tighter environment supports earnings through higher crude prices and record refining “crack spreads,” reflecting strong margins for turning crude into gasoline, diesel and jet fuel. Exxon says second-quarter profit doubles to about $14.5 billion, and Chevron reports nearly quadruple profits to about $12.1 billion, with executives warning that gasoline prices may remain under pressure for longer due to limited inventories and reduced refining capacity. They point to a need to reopen the Strait, rebuild inventories, and restart supply flows.

Meanwhile, U.S. Democrats introduce proposals to tax certain war-era windfall profits and redistribute proceeds to consumers. Other observers and analysts note that not all companies benefit equally because supply access and transport constraints vary by region.