#USIranTensionsImpactMarkets

The world woke up to a fundamentally different geopolitical reality on February 28, 2026, when the United States and Israel launched coordinated military strikes on Iran following weeks of failed diplomatic negotiations over a new nuclear deal. What was anticipated as a potentially contained operation has since spiralled into one of the most consequential geopolitical events in a generation, and global financial markets are absorbing the shockwaves in real time.
The immediate market reaction was swift and severe. The Dow Jones Industrial Average dropped more than 900 points at the opening bell on the fourth day of the conflict, with the Nasdaq Composite sinking more than 1.8 percent, putting the index on course for its worst single trading day since April 2025. International markets fared even worse. Japan's Nikkei dropped 3.06 percent and Germany's DAX sank 3.44 percent as panic spread across global exchanges.
Energy markets have been the most immediate and dramatic casualty of the conflict. Oil prices spiked to around $82 per barrel, a jump of more than 13 percent after markets opened on March 2, with shipping data showing more than 200 oil and LNG vessels anchoring outside the Strait of Hormuz as war risk insurance issues and precautionary operational pausing brought traffic to a near standstill. The situation was compounded dramatically when QatarEnergy announced it was declaring Force Majeure on its contracts with buyers and shutting down gas liquefaction entirely, sending global natural gas prices surging and prompting Qatar's energy minister to warn that if the war continues, other Gulf energy producers may be forced to halt exports entirely, threatening to bring down the economies of the world.
The range of possible outcomes for oil prices is staggering. In the baseline scenario of a U.S. and Iran deal within four weeks, Brent crude could spike to $85 per barrel but should end 2026 around $70. In a tail risk scenario where Iran targets energy infrastructure across the region and sustains disruption to Strait of Hormuz shipping, Brent could rise above $130 per barrel.
Aviation and travel have been hit just as hard. More than one million people found themselves caught in travel chaos as another 1,900 flights were cancelled in and out of the Middle East, with major hubs like Dubai International Airport lying completely deserted.
The macro consequences extend well beyond energy and aviation. A prolonged oil supply disruption could box in the Federal Reserve, increasing the odds of smaller rate moves or a full pause as policymakers weigh rising inflation concerns against slowing growth. Military escalation could also lead to higher U.S. defence outlays and larger deficits, putting upward pressure on long term bond yields and creating a potential headwind to both equity and fixed income assets.
Yet not all analysts are predicting catastrophe. Economists assign roughly a 60 percent probability to a baseline scenario in which U.S. and Israeli airstrikes continue for weeks rather than months, Iranian retaliation fades as missile stocks are depleted, and disruption to the Strait of Hormuz proves short lived. Historical data from 40 major geopolitical events over the past 85 years shows that on average the S&P 500 lost just 0.9 percent in the first month following such events but rose 3.4 percent across the six months after.
The conflict has created a clear set of winners and losers across asset classes. Defence and aerospace stocks are expected to continue leading gains, while sectors being disrupted by AI are likely to see continued pain. Municipal bonds are expected to remain relatively insulated as a U.S. focused asset class supported by essential public service revenue streams.
The world is now in a waiting game. Every day of continued disruption in the Strait of Hormuz raises the economic stakes for the entire global economy. The next two to four weeks will determine whether this becomes a contained historical footnote or a supply shock that reshapes global markets for the rest of 2026 and beyond.