BANGKOK — The coordinated U.S. and Israeli military strikes on Iran that killed Supreme Leader Ayatollah Ali Khamenei over the weekend triggered one of the sharpest single-session sell-offs in Asian equity markets this year, with oil prices surging and safe-haven assets rallying sharply on Monday as traders priced in the prospect of a sustained disruption to Persian Gulf energy flows.

Asian Equity Markets Take Immediate Hit

Japan's Nikkei 225, one of the most globally exposed benchmarks in the Asia-Pacific region, shed 2.4% in the opening minutes of Monday's session, falling to 57,430.18. The index trimmed some of those losses through the morning and was trading 1.3% lower at 58,073.01 by midmorning Tokyo time. Australia's S&P/ASX 200 dropped 0.4% to 9,159.60. In Hong Kong, the Hang Seng Index fell 1.8% to 26,158.62, while Taiwan's benchmark shed 0.6% and Singapore's main index dropped 1.9%. In a notable divergence, China's Shanghai Composite edged 0.2% higher to 4,170.96 in early trading, though the broader regional tone was decisively risk-off. South Korean markets were closed for a public holiday, removing one of Asia's more liquid venues from the day's price-discovery process.

U.S. equity futures pointed firmly lower before the New York session. Futures tied to the S&P 500 fell 1.1%, while those for the Dow Jones Industrial Average declined 1.2% and Nasdaq composite futures slipped 1.1%. The moves reflected investor anxiety that a sustained conflict in the Middle East could compound an already fragile domestic economic picture, after Friday's data showed U.S. wholesale inflation running at 2.9% in February, more than twice the 1.6% analysts had forecast. That reading reinforced expectations that the Federal Reserve will delay any further cuts to interest rates, removing a potential cushion for risk assets. Lower interest rates typically encourage investment by reducing borrowing costs and lifting valuations, while premature cuts risk stoking inflation further.

Oil and Safe Havens Signal Escalation Premium

Crude oil prices surged on the open as traders moved rapidly to price in supply-disruption risk. Brent crude, the global benchmark, had already risen 2.9% to $72.87 a barrel in Friday's session as U.S. military assets concentrated across the region. On Hyperliquid, a cryptocurrency exchange that provides 24-hour futures trading and therefore offered the first market signal after the weekend attacks, perpetual swap contracts tied to oil jumped nearly 5% to approximately $71.70 a barrel. The premium attached to oil reflects both the immediate physical disruption and the deeper structural risk: that a widening conflict could interrupt transit through the Strait of Hormuz, the narrow 21-mile-wide channel at the mouth of the Persian Gulf that serves as the world's single most important oil corridor.

Gold climbed 2.3% to $5,380.60 per troy ounce as investors sought protection in traditional safe-haven assets. Silver rose 2.1% in parallel. The U.S. dollar strengthened against regional currencies, with the greenback rising to 156.29 Japanese yen from 156.04 at the close of last week's New York session. The euro slipped to $1.1788 from $1.1812. The flight to dollars and gold is a textbook risk-off response: when geopolitical shocks materialize, investors typically reduce exposure to equities and high-yield assets, redirecting capital toward instruments perceived as stores of value or relative safe harbors during periods of uncertainty.

The Hormuz Chokepoint and What Closure Would Mean

The Strait of Hormuz sits at the center of the market's anxiety. Roughly one-third of all seaborne oil exports and approximately 20% of global liquefied natural gas shipments pass through this narrow passage annually. Iran shares a coastline with the strait, and IRGC naval forces were broadcasting warnings to commercial shipping on Saturday, telling operators that no vessel was permitted to transit. Iran has not formally closed the strait, and tanker owners have been the primary actors pulling ships from the route, suspending oil and gas shipments without waiting for an official closure order. Two vessels were attacked while transiting the waterway over the weekend, deepening the freeze in commercial traffic.

The potential economic consequences of an extended closure are severe. Iran produces roughly 3 million barrels of oil per day, making it the fourth-largest producer within the OPEC cartel, and exports approximately 1.6 million barrels daily, the bulk of which flows to China. China, India, Japan, and South Korea together accounted for nearly 69% of all crude oil and condensate flows through the strait in 2024, according to U.S. Energy Information Administration data. If Asian importers were forced to scramble for alternative supply, the resulting bidding war could overwhelm global spare capacity. Analysts at Capital Economics have estimated that a sustained rise in crude to $100 per barrel could add between 0.6 and 0.7 percentage points to global inflation. Goldman Sachs has previously modeled a scenario in which an extended disruption to the strait pushes prices well past the $100 threshold.

OPEC and its allies announced on Sunday that the group would raise daily output by 206,000 barrels, reversing a production pause it had held earlier in the year. Analysts viewed the gesture as insufficient to offset a Hormuz disruption scenario, though it may provide some buffer if the conflict stabilizes quickly.

Iran's Retaliation and the Widening Regional Crisis

Tehran's retaliatory strikes extended well beyond Israeli territory. Iranian forces launched missile barrages targeting countries across the region that host U.S. military installations, including Qatar, Kuwait, the United Arab Emirates, Bahrain, Jordan, Saudi Arabia, and Iraq. In Israel, civil defense sirens prompted mass movements to air raid shelters, with most incoming missiles intercepted. Explosions and smoke were reported near Dubai International Airport, one of the world's busiest aviation hubs, prompting Emirates to suspend all operations. Qatar Airways similarly halted flights. Aviation data indicated that more than 1,800 flights into and out of Middle Eastern airports were canceled on Saturday, with a further 1,400 canceled on Sunday. Dozens of flights were rerouted mid-air as affected countries closed their airspace. The disruption reached as far as Brazil and Australia, where carriers that normally route passenger services through Gulf hubs were forced to change plans.

The death of Khamenei, confirmed by Iranian state media early Sunday, marks a profound political rupture in Iran's governing structure. The Supreme Leader held final authority over military and nuclear policy, and his successor will face both the pressures of ongoing military conflict and an internal succession contest that is likely to be contested. Analysts tracking the region noted that an Iranian government in transition may be less predictable than one operating under established hierarchies, which itself represents a risk premium for energy markets.

Preexisting Market Weakness Amplified the Shock

Friday's U.S. equity close set a fragile backdrop heading into the weekend. The S&P 500 fell 0.4% on Friday, completing its second losing month in the last ten. The Dow Jones Industrial Average dropped 1.1% and the Nasdaq composite shed 0.9%. Treasury yields declined as investors sought the relative safety of government bonds ahead of the weekend. The wholesale inflation figure released Friday delivered a second blow: at 2.9%, the reading ran sharply above the 1.6% economists had forecast, raising questions about when, or whether, the Federal Reserve will resume its rate-cutting cycle. For equity investors, higher-for-longer interest rates reduce the present value of future corporate earnings and increase the cost of capital, both headwinds for stock valuations. The geopolitical shock arriving on top of this domestic data print left markets with little capacity to absorb the news without a meaningful selloff.

Written by Nick Ravenshade for NENC Media Group, original article and analysis.