The Strait of Hormuz carries roughly 20mn barrels of oil a day in peacetime, along with a hefty share of the world's liquefied natural gas. That is about a fifth of all petroleum liquids traded globally. It is, by any measure, the single most important shipping lane on earth.

Right now, it is all but shut.

Shipping traffic has collapsed. Insurers have pulled cover. And for the six Gulf Cooperation Council (GCC) states, Saudi Arabia, the UAE, Qatar, Kuwait, Bahrain and Oman, the consequences go well beyond lost export revenue. The Hormuz closure has laid bare a vulnerability that decades of sovereign wealth accumulation and glossy diversification plans never resolved: these countries cannot feed themselves.

GCC states import around 85% of their food. Qatar imports more than 90%. The same narrow waterway that carries their oil out carries their grain, rice and sugar in. Even the UAE, which has done more than most to build strategic reserves, has confirmed it holds only four to six months of essential supplies. Across the wider GCC, assessments point to a three to six-month buffer for basic staples. After that, rationing kicks in. Black markets follow. Social pressure mounts, and you can expect many expats to depart. Britain’s HMRC will be delighted to see 200,000 tax exiles return in any case.

The problem compounds because the revenue has stopped at the same time as the food. Saudi Arabia alone accounts for roughly 37% of Hormuz oil flows. Iraq, Kuwait and Qatar are similarly dependent. There are bypass options on paper, the Saudi East-West pipeline and Abu Dhabi's Habshan-Fujairah route, but these cover a fraction of normal volumes and do nothing whatsoever for food imports or Qatari LNG shipments.

Sovereign wealth funds are enormous, but money alone does not move grain through a war zone. Overland trucking from Turkey or emergency air freight cannot come close to replacing bulk carrier volumes. The infrastructure simply does not exist, and Iran will probably target those planes to make sure they don’t try to get around their regional hegemony.

This is where the structural weakness of the rentier model becomes impossible to ignore. The Persian Gulf monarchies have operated for decades on an implicit bargain: no taxation, generous subsidies, well-paid public sector jobs, all funded by hydrocarbon revenues, in exchange for political stability. That bargain depends on two things happening simultaneously: oil flowing out and goods flowing in. Hormuz handles both. Close it, and the contract falls apart. With expats now realising they were in the “Middle East” all along.

Years of "Vision" programmes have produced impressive skylines and non-oil GDP figures, and great homes for London’s corporate set to avoid tax. Saudi Vision 2030 and the UAE's Centennial 2071 plan have attracted global attention and real investment (let’s not talk about NEOM). But none of this changes the desert's basic arithmetic. Arable land is negligible. Water scarcity is extreme. Desalination plants, which supply between 40% and 90% of drinking water depending on the state, are themselves energy-intensive and likely targets if Iran get extremely belligerent. AI centres are sucking the life (and water) out of the already buckling energy grid of the A/C operated metropolises.  A prolonged disruption does not just threaten food security. It threatens water security, too.

The 2017 Qatar blockade, when Saudi Arabia, the UAE and Bahrain cut ties with Doha, was a warning of what supply isolation looks like for a small Persian Gulf state. The current Hormuz closure is that warning scaled up to the entire region. This was repeatedly warned by the Islamic Republic across the water, yet the Trump administration clearly thought they were bluffing.

A sustained shutdown triggers a chain reaction that economists have long predicted for rentier states under extreme stress: foreign-exchange shortages, spiralling domestic inflation, capital flight as the expatriate workforce (up to 88% of the population in the UAE) begins to leave, and a collapse in non-oil sectors that depend entirely on imported inputs. Oil prices may spike on global markets, but Gulf producers are the last to benefit when they cannot physically export.

Reserves buy time. Emergency rationing, intra-GCC coordination and frantic back-channel diplomacy can delay the worst outcomes. But time is finite. A crisis that extends beyond the second quarter of 2026 will test not just supply chains but the political legitimacy of governments whose populations have never known genuine scarcity.

Iran’s IRGC said they would likely mine the Strait in the coming days if things don’t find an off-ramp. They also warned that military attacks on GCC countries and Israel (today they sent a Shahed drone over the border to Azerbaijan in a surprise attack) “could last for several months”. If that is the case, we could be witnessing the twilight of the Gulf as we know it.

When the Iraq War 2 raged, visits to Dubai made the place seem incongruous to the wider natural populace in the region. It was an anomaly, one that appears to have spawned several GCC copycats over the years, yet always seemed somehow out of place. The knock-on effect of supply shortages would end regional markets, real estate values would likely collapse within weeks, and cars would pile up at airports as people escape — that’s if the airport is open.

If this continues as it appears to be with Iran digging its heels in; show could be over lads. Sorry Deano back to Newcastle.