Oil Surges on Iran Strikes While Hawkish Warsh Lifts Dollar, Yields and Hike Odds Ahead of Asia Open
Key Takeaways
- •US strikes on Iranian rocket launchers on Larak Island pushed Brent above $90 and WTI above $86, the first such exchange in about a month.
- •Fed Chair Kevin Warsh's hawkish remarks lifted implied September rate hike odds to roughly 57%, up from about 40% a week earlier, and the 10-year Treasury yield rose to around 4.7%.
- •The US dollar strengthened, with USD/JPY briefly trading above 160 despite Japan's disclosed intervention effort of roughly $96 billion.
- •US equities fell 0.1-0.7% but preserved August monthly gains, extending the Dow's streak to five straight positive months.
- •Despite the Hormuz escalation, 6-8 million barrels per day are still transiting the strait, limiting physical supply disruption relative to headline risk.

Markets are being pulled in two directions at once: a Federal Reserve re-pricing toward tighter policy and a fresh escalation in the Gulf. The two forces normally push risk assets and the dollar in opposite directions, and as of Monday's close they were fighting to a standstill in equities and gold, while bond yields and the dollar moved unambiguously higher.
Fed Chair Kevin Warsh's Jackson Hole remarks on Friday, reinforced by brief but confident G20 comments on Monday, sit awkwardly against Treasury Secretary Bessent's own framing from the same day — that the Fed traditionally avoids hiking into a supply shock. That tension is worth watching, given that Warsh's tone has if anything hardened rather than softened since Bessent spoke. The Australian dollar is caught between the stronger dollar and hawkish Fed backdrop working against it and the oil rally supporting it as a commodity currency, leaving today's Caixin PMI print and Friday's US jobs report as the next real tests of which narrative dominates.
Oil leads the moves
Brent crude broke above 90 dollars a barrel and WTI pushed above 86 after US forces struck Iranian rocket launchers on Larak Island that were reportedly being prepared to mine the Strait of Hormuz — the first such exchange in roughly a month. Iran claimed retaliatory strikes on US bases in Jordan, and separately alleged that a supertanker had struck two mines while attempting to cross Hormuz's southern route, an incident that has not been independently confirmed.
The stakes of any Hormuz disruption are outsized because the strait is the world's most important oil chokepoint, handling roughly a fifth of globally traded petroleum liquids. Despite the escalation, reports suggest between 6 and 8 million barrels a day are still transiting the strait, mainly from other Gulf producers, meaning the physical disruption to supply remains limited relative to the headline risk. Oil is now up around 2 percent for August, on top of a 22 percent surge in July.
Hawkish Fed re-pricing
On the policy side, Fed Chair Kevin Warsh reinforced his hawkish Jackson Hole tone with brief but confident remarks at the G20 on Monday, saying that secular stagnation now looks like a description of the past. Markets responded by pushing September rate hike odds, as tracked by CME's FedWatch tool — which prices implied policy expectations from 30-day Fed funds futures — up to around 57 percent, sharply higher than the roughly 40 percent priced a week earlier. The 10-year Treasury yield climbed to around 4.7 percent on a third consecutive day of gains.
That shift sits in some tension with the case Treasury Secretary Scott Bessent laid out in a CNBC interview the same day, in which he argued that the Fed traditionally avoids raising rates into a supply shock absent second- or third-order inflation effects. The debate matters because an oil-driven supply shock feeds directly into headline inflation, complicating the usual response of tightening policy against demand-driven price pressure. Warsh's own tone, both at Jackson Hole and again at the G20, has if anything hardened rather than softened since Bessent spoke — a divergence worth watching as the September meeting approaches.
Dollar strength, yen pressure
The stronger hike odds lifted the US dollar, with USD/JPY briefly trading above 160 amid the widening gap between a hawkish Fed and a Bank of Japan seen as reluctant to move quickly, notwithstanding Tokyo's roughly 96 billion dollar intervention effort disclosed late last week. The level is politically sensitive: past moves past the 160 mark have previously drawn verbal and actual intervention from Japanese authorities.
The Australian dollar is caught between two competing pulls: the stronger dollar and hawkish Fed backdrop weighing on it, and the oil rally supporting it in its role as a commodity currency. The 0.715 level has been flagged as a support level to watch if the dollar side gains the upper hand.
Equities slip, gold steadies
US equities slipped on Monday, with the S&P 500, Nasdaq and Dow all down by roughly 0.1 to 0.7 percent, partly dragged by weakness in Goldman Sachs and Alphabet. Even so, all three indices closed out August with monthly gains intact, extending the Dow's winning streak to five straight months.
Gold, which had fallen sharply on Friday in response to Warsh's hawkish inflation warning and the resulting dollar strength, steadied on Monday as the oil-driven risk premium offset some of the rate-driven pressure, though silver underperformed gold on the same move — a pattern consistent with gold's traditional safe-haven role in geopolitical episodes, which higher real yields and a firmer dollar otherwise tend to blunt.
With China's Caixin PMI due today and the US jobs report landing Friday, both releases are shaping up as the next real tests of whether the hawkish Fed narrative or the geopolitical risk narrative comes to dominate market direction.
Source: Investinglive