Treasury Yields Hold Near 4.45% as Iran Peace Talks Falter, Repricing Geopolitical Risk
Markets shift from pricing pure conflict premium to modeling sustained energy disruption and hawkish Fed path under new Chair Kevin Warsh.
US Treasury yields settled at 4.45% on May 29 as tentative US-Iran peace negotiations stalled, reversing a brief rally that had pulled the 10-year from a May 20 peak of 4.7% to 4.46% earlier in the week. The yield fluctuation reflects investor repricing of a three-part geopolitical scenario: immediate safe-haven flows into Treasuries, medium-term energy inflation pressures complicating Federal Reserve policy, and longer-term uncertainty over how prolonged Middle East instability alters US rate expectations. With the Strait of Hormuz disruption now characterised by the International Energy Agency as the largest supply disruption in the history of the global oil market, markets confront operational risks that extend beyond traditional war premium pricing.
From Ceasefire Hopes to Stalemate Reality
Treasury Yields compressed from 4.7% to 4.46% following reports of a tentative ceasefire and 60-day memorandum to extend hostilities cessation and begin nuclear negotiations, according to Trading Economics. By week’s end, however, Secretary of State Marco Rubio characterised talks as “still a work in progress,” noting that anticipated announcements had failed to materialise. The reversal to 4.45% signals market acknowledgment that peace mechanics remain fragile—Trump’s expanded demands for regional normalisation and Iran’s counterclaims for reparations have created negotiation gridlock even as military operations formally concluded on May 5.
Operation Epic Fury, the US-Israel campaign that ran from February 28 through May 5, resulted in the assassination of Supreme Leader Khamenei and the closure of the Strait of Hormuz, according to Britannica. That chokepoint handles 20% of global oil trade. Brent crude spiked to $119.94 in late April, while data from OilPrice.com and Al Jazeera shows the Dallas Federal Reserve classified the disruption as two to three times larger than the 1973 and 1990 oil shocks, with crude climbing from roughly $60 per barrel in late January to a $91 average in March.
“The market is shifting from pricing pure geopolitical risk to grappling with tangible operational disruption, as refinery shutdowns and export constraints begin to impair crude processing and regional supply flows.”
— Natasha Kaneva, Head of Global Commodities Strategy, J.P. Morgan
Energy Inflation Meets Hawkish Fed Transition
The conflict’s inflation transmission arrived swiftly. US national average gasoline prices reached $4.56 per gallon by May 21—the highest in four years—according to CNN. Despite this, PCE inflation data released May 29 came in below expectations at 3.8% headline and 3.3% core on an annual basis, though both remain well above the Fed’s 2% target. Markets now price zero interest rate cuts for 2026, with rate hike probability rising as the conflict persists, according to CNBC. That represents a stark reversal from pre-war assumptions of one to two 25-basis-point cuts.
The repricing occurs under new Federal Reserve Chair Kevin Warsh, sworn in May 23 with a Trump mandate to bring rates down. Yet trader expectations have moved in the opposite direction. HSBC declared US Treasuries in a “danger zone” on May 22, when the 10-year traded at 4.57% and the 30-year at 5.08%. The 10-year term premium hovers around 80 basis points, reflecting persistent uncertainty over how long energy disruption will sustain inflation pressures that complicate any dovish pivot.
The Federal Reserve’s policy rate currently sits in a 3.5%-3.75% target range. Pre-war market consensus anticipated one to two 25-basis-point cuts in 2026, based on disinflation progress through late 2025. The Iran Conflict has inverted that trajectory: sustained oil supply disruption raises the probability that inflation remains above target through year-end, forcing the Fed to hold rates or tighten further despite growth headwinds.
Duration Risk Replaces Event Premium
Morgan Stanley’s analysis frames the macro risk plainly: “The key economic risk in the current Iran war is its duration. Sustained higher oil prices can broaden into other costs and raise the odds of higher rates for longer, while weighing on economic activity.” The shift from event-driven volatility to duration risk alters Treasury positioning. Early conflict stages saw safe-haven flows compress yields; now, investors model a scenario where prolonged energy inflation forces the Fed to maintain restrictive policy even as growth slows.
JPMorgan’s commodity strategy team notes that markets have transitioned from pricing pure geopolitical risk to modeling operational disruption—refinery shutdowns, export constraints, and regional supply flow impairment. The Dallas Fed quantifies the 2026 Iran War as the largest geopolitical oil supply disruption in history, creating a regime where Treasury yield levels reflect not economic strength but geopolitical contagion to inflation expectations.
What to Watch
The immediate variable is whether the 60-day negotiation framework produces tangible progress or deteriorates further into demands gridlock. Any breakthrough that credibly reopens the Strait would compress yields sharply—markets remain priced for prolonged disruption rather than imminent resolution. Conversely, failure to advance talks raises the probability that energy inflation persists through Q3, forcing Chair Warsh into an immediate policy test: honour the Trump mandate for lower rates or defend the 2% inflation target with sustained restrictive policy.
Traders will monitor June PCE data for evidence that May’s below-consensus print represents genuine disinflation or temporary relief before energy costs broaden into core categories. The term premium trajectory offers a real-time gauge of geopolitical risk pricing—a sustained move above 80 basis points would signal markets embedding conflict duration as a structural rather than transitory factor. Finally, any shift in OPEC+ production guidance in response to Strait closure duration will determine whether current oil price stabilisation near $97 holds or reverts toward the $107-$119 range seen in early May.