Asian share markets retreated across the board on Monday, with investors recalibrating their risk positions amid mounting concerns over Middle Eastern stability and fresh indications that the Federal Reserve may raise interest rates sooner than previously anticipated. The combination of geopolitical uncertainty and shifting monetary policy expectations created a particularly challenging environment for regional equities, forcing traders to reassess their exposure to cyclical assets and reconsider the duration of the current bull run that has characterised much of Asia's market performance in recent weeks.

The immediate trigger for the market pullback stemmed from renewed doubts about the viability of peace negotiations in the Middle East, a situation compounded by Iran's continued blockade of the Strait of Hormuz—one of the world's most critical chokepoints for global energy supplies. Tracking data revealed a marked decline in vessel transits through the waterway, with only 26 ships passing through on Saturday compared to 32 on Friday, signalling that Tehran's threats were translating into tangible disruptions to maritime commerce. This escalation in regional tensions, combined with reports that US Vice President JD Vance was attempting to broker talks with Iranian officials even as President Donald Trump threatened additional military action, created a deeply uncertain backdrop that spooked energy markets and transmitted shockwaves throughout global financial markets.

Crude oil futures reflected this tension with notable gains. Brent crude climbed 1.1% to settle at $81.43 a barrel, though this remained substantially below the peak of $126.41 reached in May, suggesting that markets have not yet fully priced in an extended supply disruption. US crude advanced more sharply, rising 2.7% to $78.70 a barrel, a level that significantly exceeded the $67 mark that prevailed before major conflict erupted in the region. These price movements underscored the vulnerability of global energy supplies to disruptions originating from the Middle East, a concern that carries particular weight for energy-importing nations across Southeast Asia that depend heavily on stable oil flows through the Strait of Hormuz.

Futures markets pointing to Wall Street's opening session suggested that negative momentum would extend into US trading, with S&P 500 futures declining 0.5% and Nasdaq-100 futures dropping a steeper 0.7%. European bourses also indicated weakness, as EUROSTOXX 50 futures slipped 0.5%, while DAX futures and FTSE futures registered more modest losses of 0.3% and 0.1% respectively. The breadth of this decline across multiple regional indices highlighted the coordinated nature of the selloff and the interconnected nature of global equity markets in an era of instantaneous information flow and algorithmic trading.

Performance across Asia-Pacific markets displayed notable divergence. Japan's Nikkei bucked the broader downtrend by edging up 0.7%, buoyed by momentum from a spectacular rally that had added almost 8% the previous week to reach all-time highs. Conversely, South Korea's benchmark index fell 0.9% after an extraordinary surge exceeding 11% in the previous week, driven primarily by insatiable institutional demand for semiconductor stocks that had propelled the technology-heavy market to unsustainable levels. The broader MSCI Asia-Pacific Index, which excludes Japan and serves as a comprehensive gauge of regional equity sentiment, declined 0.4%, suggesting that the pullback was relatively contained despite the headwinds.

A significant proportion of Monday's weakness reflected recalibrated expectations regarding US monetary policy, as investors reassessed the probability of interest rate increases following the Federal Reserve's notably hawkish communiqué released the previous week. Market participants rapidly repriced their models to reflect a 75% probability that the Fed would commence rate hikes as early as September, a marked shift from the complacency that had previously characterised expectations for extended monetary accommodation. Derivative markets now embedded approximately 38 basis points of cumulative tightening by year-end, while yields on two-year Treasury notes jumped 4 basis points to 4.2276%, reaching their highest level since early 2025 and signalling renewed confidence that the Fed would indeed pursue a tightening cycle.

JPMorgan's cross-asset strategy team provided a counterbalance to the immediate market pessimism, articulating a baseline forecast that anticipated the first rate increase would occur during the second half of 2027, suggesting that the current monetary cycle remains supportive of risk assets over the medium term. The strategists acknowledged, however, that the margin for policy error had compressed significantly, with limited tolerance remaining for further inflationary momentum and genuine risks that the Fed would be compelled to act earlier than currently anticipated if economic data disappointed. Maintaining a constructive stance on equities, JPMorgan highlighted that an improving labour market would sustain interest rates at elevated levels over an extended horizon, providing support for a concentrated leadership pattern centred on Quality Growth, Large Cap, and Technology sectors, with the S&P 500 target tilted toward 8,000.

The Federal Reserve's preferred inflation gauge, the core Personal Consumption Expenditures index, is scheduled for release on Thursday with forecasts indicating a slight uptick to 3.4% for May, sustaining the risk narrative that policymakers may feel pressure to tighten policy more aggressively than the market's baseline expectations. This data release will coincide with appearances by Federal Reserve Governor Christopher Waller and Federal Reserve Bank of New York President John Williams, offering additional opportunities for central bank officials to calibrate market expectations and provide guidance on the institution's policy trajectory.

The Fed's hawkish posture provided substantial support for the US dollar, which remained well-supported at 161.44 yen with only the looming threat of Japanese intervention preventing a test of the 161.96 resistance level established during mid-2024. The euro weakened to $1.1462 after touching a three-month low of $1.1418 on Friday, while sterling declined 0.2% to $1.3210 as political uncertainty in Britain weighed on sentiment. Reports that Prime Minister Keir Starmer was contemplating his political future following rival Andy Burnham's decisive parliamentary election victory prompted calls from within the governing Labour Party for his resignation, a development that President Trump amplified through social media posts. Analysts at NAB warned that this political uncertainty portended sustained selling pressure on gilts as the week began, with investors demanding higher yields to compensate for fiscal policy risks.

Commodity markets reflected the broader risk-off sentiment, with gold—which generates no interest income and therefore becomes less attractive when bond yields rise—slipping 0.1% to $4,154 per ounce. The modest decline in the precious metal underscored how the elevated interest rate environment was subtly reshaping asset allocation patterns, making yield-bearing instruments increasingly competitive with traditional safe-haven assets. For Malaysian and Southeast Asian investors, these dynamics carry substantial implications, particularly regarding currency exposure, oil price pass-through to consumer prices, and the potential for regional central banks to follow the Fed's tightening path if inflation proves sticky.