US-Iran Conflict Raises Amazon River Freight Costs and Oil Prices

The war between the United States and Iran, now in its fifth month, has pushed Brent crude up 23% in July, from $72 to $95 a barrel, with analysts expecting prices to exceed $100 as the Strait of Hormuz and Bab el‑Mandeb remain closed. The surge in global oil and diesel prices has directly affected Brazil’s Amazon region, where diesel accounts for 40‑50% of river freight costs. According to Madison Nóbrega of the Amazonas River Navigation Companies Union, diesel prices are about 40% higher than in January, causing freight rates to double and overall operating costs to rise by roughly 100%. The ongoing drought further lengthens voyages, compounding the financial strain.

Meanwhile, market participants have reacted to tentative signals of a possible US‑Iran agreement to reopen the Hormuz Strait. Statements by President Donald Trump and Treasury Secretary Scott Bessent briefly lowered oil prices and sparked a short‑lived rally in equity markets, despite no formal pact being signed. Analyst Pepe Escobar warned that a “last window” remains for diplomatic resolution, noting that Trump reportedly backed away from a large‑scale offensive after Pentagon warnings about depleted interceptor stocks and the risk of a sharp energy price spike. The combination of geopolitical tension, market speculation, and regional economic impacts continues to shape the situation.