Renewed US-Iran tensions drove Brent crude to approximately $91 per barrel overnight, amplifying inflationary concerns that pushed the US 30-year Treasury yield to its highest level since 2007 at around 5.25–5.31%, while the 10-year added 5 basis points to 4.68%. The resulting risk-off tone weighed on Wall Street, with the S&P 500 slipping 0.17% to 7,785.76 and the NASDAQ off 0.28%, as markets scaled back near-term Fed rate cut expectations and rotated defensively into energy and utilities. The US dollar softened modestly — the DXY falling 0.29% to 99.67 — while gold extended its rally to $4,417.80 per ounce, reflecting safe-haven demand alongside the oil bid. The Jackson Hole Symposium on August 27–29 now looms as the next major policy signpost, with markets highly attuned to any Fed commentary on the interplay between energy-driven inflation and the long-end yield complex.
For Asia-Pacific markets opening Tuesday, the sharp rise in long-end US yields is the dominant cross-asset signal, tightening financial conditions and pressuring rate-sensitive equities and REITs across the region. The ASX 200 closed Monday's session down 0.80% to 9,115.2 — underperforming most regional peers — and the ASX VIX jumped 5.58% to 10.98, signalling a modest pickup in domestic volatility concern despite the broader VIX easing 2.60% to 14.25. The Nikkei 225 managed a 0.59% gain to 68,713.8, supported by AI-related demand, while KOSPI surged 2.42% and Singapore's SGX added 0.41%, suggesting selective Asian resilience. For ASX investors, the critical watch points are energy names benefiting from the Brent surge, materials stocks exposed to iron ore softness at $94.95 per tonne, and any rate-sensitive sectors vulnerable to the ongoing steepening of the US yield curve.