What happened
Major Gulf markets buckled in early trade on Thursday, October 15, 2026, as Yemen's Houthis threatened more attacks on Saudi Arabia, putting the country's benchmark index on track for a sixth weekly loss. The Saudi index dropped 0.6%, pulled down by a 0.6% fall in oil giant Saudi Aramco. Qatar's index led losses in regional stocks, falling 1.2% to its lowest level in more than six years. Dubai's main index lost 0.7% as toll operator Salik slid 1.7%, and Abu Dhabi's index slipped 0.4%. The sell-off was broad rather than confined to a single country, a sign that investors were pricing in a regional risk rather than a local one.
The trigger was the Houthis' pledge, made on Wednesday, to keep attacking airports and oil facilities in the kingdom. The threat came a day after a Houthi strike caused extensive damage to Aramco's headquarters in Dhahran, where a fire spread across several floors, according to three people with direct knowledge of the matter cited by Reuters. The Houthis have been attacking Saudi targets for months, but the Dhahran strike was a step change: it hit the headquarters of the world's largest oil company, in a city that is the heart of Saudi Arabia's oil industry, and it demonstrated that the group could reach high-value, well-defended targets. The threat of more attacks raised the prospect of a sustained campaign rather than a one-off strike.
Shipping risks are also growing. A container ship and a dry bulk carrier sank near the Strait of Hormuz within 24 hours after projectiles hit them in separate incidents, maritime officials said on Wednesday. The Strait is the world's most important oil chokepoint, carrying about a fifth of global oil trade, and the sinking of two vessels in a single day underscored how dangerous the waterway has become. The sinking of the GFS Pride in the Strait earlier in the conflict was an early warning of the same danger.
The IMF's warning
On Thursday, the International Monetary Fund warned that a long war in the Middle East, and further disruption to energy production, shipping routes or critical infrastructure, posed the biggest risk to economies in the Middle East and Central Asia. The warning was blunt in its framing: the risk is not a single attack or a single oil-price spike, but the cumulative effect of a war that drags on, degrading infrastructure, deterring investment and forcing governments to spend on security rather than development. The IMF's Asia-Pacific outlook, released the same week, made the parallel point for Asia: a prolonged stalemate could keep commodity prices high and deplete oil reserves.
The economic logic is straightforward. War raises the cost of everything in the region: insurance premiums for shipping, security costs for facilities, borrowing costs for governments, and the price of energy for consumers. It also deters the foreign investment that Gulf economies need to diversify away from oil. Saudi Arabia's Vision 2030 programme, the UAE's push into technology and finance, and Qatar's post-World Cup tourism ambitions all depend on the perception that the Gulf is stable and safe. Each attack chips away at that perception, and each market fall makes the next investment decision harder. The IMF's warning is, in effect, a statement that the economic damage of a long war could exceed the damage of any single battle.
Oil prices told a more complicated story. Brent crude futures fell $2.28, or 2.2%, to $103.78 a barrel by mid-morning GMT on Thursday, even as supply risks rose. The fall reflected traders' weighing of weaker global demand against disruption fears: if the world economy slows, oil demand falls, and that can outweigh the effect of supply disruptions. The same tension has been visible all week, with oil prices volatile as investors contend with attacks on Saudi Arabia while considering the prospect of additional diesel supplies from Russia. For Gulf producers, that volatility is itself a problem: it makes budgeting harder and investment planning more uncertain.
Why the Gulf matters to the world
The Gulf is not a peripheral region for the global economy; it is the centre of the world's energy system. Saudi Arabia is the world's largest oil exporter, the UAE is a major producer and a global logistics hub, and Qatar is one of the world's largest exporters of liquefied natural gas. The Strait of Hormuz, between Iran and Oman, carries about a fifth of the world's oil and a significant share of its gas. When that region is at war, the effects ripple to every petrol station, every airline and every factory in the world. The US inflation report for September showed how energy-driven price pressures are already feeding into consumer prices in the world's largest economy.
The conflict's roots run deep. The Houthis, who control much of Yemen, have been attacking Saudi Arabia and Red Sea shipping for years, framing their campaign as support for Palestinians and opposition to Saudi and Western policy. The current escalation is linked to the wider war involving Iran, the United States and Israel, which began in late February with a bombing campaign against Iran. Iran and its proxies have carried out dozens of pinpoint strikes on infrastructure across the Gulf, systematically disabling critical equipment and causing cascading failures, according to a Reuters investigation. The Houthis' threat of more attacks on Saudi airports and oil facilities is part of that wider campaign, and it is why the IMF's warning about a long war carries such weight: the attacks are not random, they are targeted at the infrastructure that makes the Gulf economy work.
The human cost is also mounting. The Houthis' earlier attacks on Riyadh's airport killed at least 13 people, and a strike on King Khalid International Airport on October 11 came a day after that attack. The Asian Tour postponed its season-ending PIF Saudi International golf tournament, scheduled for November 18-21 at Riyadh Golf Club, citing organisational and logistical challenges, and the DP World Tour has said its UAE playoff events remain on schedule but that it continues to monitor the situation. When golf tournaments are postponed and airlines suspend flights, the economic damage is visible even before it shows up in GDP figures. The Houthi vow of more attacks story covers the earlier escalation in this campaign.
What happens next
Three things will determine whether Gulf markets stabilise or fall further. The first is whether the Houthis carry out their threat of more attacks, and whether Saudi air defences can intercept them. The second is whether shipping through the Strait of Hormuz can be protected: the US Navy has said it has total control of the Strait, but the sinking of two vessels in 24 hours suggests that control is contested. The third is whether the wider war can be brought to a negotiated end, or whether it settles into a long stalemate of the kind the IMF fears. For investors, the near-term signal will be the Saudi index's weekly close: a sixth consecutive weekly loss would confirm that the market has entered a sustained downtrend rather than a brief correction. For the region's people, the more important question is whether the war ends before it does lasting damage to the infrastructure, investment and confidence on which their economies depend.