U.S.-Iran Tensions Push Oil Prices Above $100, Lifting Borrowing Costs

Rising tensions between the U.S. and Iran have pushed crude oil prices above $100 a barrel for the first time since July 2026, driven by recent military actions including the destruction of Iranian tankers and missile strikes near strategic shipping routes like Hormuz and Bab el-Mandeb. This has heightened inflation concerns and led to an increase in U.S. Treasury yields, with the 10-year benchmark nearing 5%. The uncertainty over how long the conflict might last—possibly beyond President Trump’s term—has added further pressure on markets. The situation is compounded by a lack of clarity around oil supply from the Gulf region and conflicting assessments among traders, energy firms, and officials. This has led to what some analysts describe as a 'residual risk premium' embedded in global energy prices that could persist for months or years. Additionally, Treasury Secretary Scott Bessent’s limited bond-buying plan disappointed investors already on edge due to rising borrowing costs. The geopolitical instability is also influencing domestic politics, with Trump proposing a $5,000 'Trump dividend' if Republicans win the November midterms—a costly fiscal stimulus that could further complicate economic policy at an already volatile time.

By By Anna Szymanski Fri, September 11, 2026 at 1:45 PM GMT+3 7 min read · Yahoo Finance ·

U.S.-Iran Tensions Push Oil Prices Above $100, Lifting Borrowing Costs

Topics: Federal Reserve policy expectations inflation concerns oil price surge U.S.-Iran conflict

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