US Strikes in Iran Reignite Oil Rally, Scrambling Ceasefire Optimism

Markets delivered a muted but telling verdict on Tuesday as US Central Command's 'self-defense strikes' in southern Iran shattered a nascent peace narrative. The S&P 500 edged up just 0.1% to 7,519.12 and the Nasdaq 100 added 0.49% to 30,001.32, with equities showing resilience even as the energy shock reasserted itself. WTI crude settled near $93.89, and Brent touched $100/bbl intraday before closing around $99 — a sharp reversal from Monday's selloff that had pushed Brent toward $96 on Trump's weekend signals that a deal was 'largely negotiated.' Gold fell 1.58% to $4,500.40/oz as the dollar firmed 0.16% to 99.15 on the DXY, while the 10-year Treasury yield ticked up 0.9 basis points to 4.493%.

The dominant event was the US military action targeting Iranian missile launch sites and boats allegedly laying mines near the Strait of Hormuz. Iran's IRGC immediately declared the strikes a ceasefire violation and threatened retaliation, derailing the diplomatic momentum that had briefly driven oil lower. The Strait has been largely closed since February 28, 2026, with cumulative disruption exceeding 1.2 billion barrels of seaborne supply — roughly 20% of global trade. Brent 2027 futures at $78.50, versus $65 pre-conflict, signal that markets are pricing a structurally elevated oil regime well beyond the immediate crisis. Talks continue in Doha with Qatari mediators, but the IRGC's public posture makes a 60-day ceasefire extension far less certain than it appeared 48 hours ago.

The inflationary read-through dominated cross-asset positioning. The Dallas Fed's May manufacturing index rebounded to +0.4 from -2.3 in April, but the headline improvement masked a raw materials price index that surged to 42.7 — an eight-month high — directly consistent with energy-driven cost pressures rippling through supply chains. Consumer Confidence (Conference Board) slipped 0.7 points to 93.1 in May, slightly beating the 92.0 consensus estimate, but two-thirds of surveyed consumers cited cutting back spending due to rising prices, and the Present Situation Index dropped 3.2 points to 121.2. The Expectations Index at 74.4 — a year-to-date high but still below the 80 recession-risk threshold — suggests households see some improvement ahead while remaining stretched. Gold's sharp pullback likely reflects dollar strength and profit-taking after an extended run rather than any structural de-escalation signal.

The FHFA House Price Index hit a nominal record of 441.6 in March (+0.1% MoM, +1.7% YoY), but in real terms the index fell 1.1% to 196.4 — a 23-month low and the seventh consecutive month of annual real depreciation. Rising mortgage rates tied to the energy shock and elevated Treasury yields are the primary culprit. The Treasury auctioned $69 billion in 2-year notes against this backdrop of dual-mandate conflict for the Fed, with demand metrics closely watched given uncertainty over the rate path.

Markets will center attention on Doha ceasefire talks and any IRGC escalation response in coming sessions. A confirmed deal framework would likely reprice Brent sharply lower and relieve Treasury yields, while a breakdown risks testing $100+ oil in spot markets. Fed speakers' tone on the energy-inflation pass-through, the Friday PCE print, and next week's jobs data will be critical in calibrating rate-cut timing expectations.