On the morning of 14 September 2019, the largest oil-processing facility on earth was burning. Cruise missiles and drones had struck Saudi Aramco’s plant at Abqaiq and the field at Khurais, knocking out 5.7 million barrels a day — more than half the kingdom’s output, roughly five percent of global supply, in the most damaging attack on Gulf oil infrastructure since Saddam Hussein torched Kuwait’s wells in 1991. Riyadh pointed to Iran. Washington had a treaty’s worth of rhetoric ready. The president declared the United States “locked and loaded.”
Then he did not strike back.
There were no American strikes on Iran, no retaliation against the attacker. Instead, US President Donald Trump released barrels from the American strategic reserve and posted, in capital letters, “PLENTY OF OIL!” The most important petro-state on the planet had been hit at its heart, and the security guarantor of the Gulf answered with a tweet about supply.
That morning is the whole story in miniature. To understand why the Gulf spent 2026 building defense pacts with Pakistan and Turkey instead of leaning on Washington, you have to understand what the American guarantee actually was — and what it never was.
It begins, as these things do, with a doctrine. On 23 January 1980, with the Shah of Iran gone and Soviet tanks in Afghanistan, Jimmy Carter told Congress that any attempt by an outside force to gain control of the Persian Gulf would be regarded as “an assault on the vital interests of the United States of America,” and that such an assault “will be repelled by any means necessary, including military force.” The line, written by his national security adviser Zbigniew Brzezinski, became the foundation of four decades of American presence in the region.
Read the sentence again, because Carter says the quiet part in it himself. What an attack on the Gulf assaults is not the Gulf. It is the vital interests of the United States. The Gulf enters his speech as a reservoir containing, in his own words, more than two-thirds of the world’s exportable oil. The Carter Doctrine was not a promise to protect the Gulf states. It was a promise to prevent any hostile power from controlling the Gulf and the strategic oil flows that passed through it — an American interest, not a guarantee owed to the Gulf. The distinction sounds academic until the day the two stop pointing in the same direction.
For a long time they pointed the same way, which is why the illusion held. When Iraq invaded Kuwait in August 1990, the United States assembled a coalition and drove Saddam out, and the Gulf read this as proof of the covenant: America defends its friends. But look at what Washington told Baghdad before the tanks moved. On 24 July 1990, State Department spokeswoman Margaret Tutwiler stated plainly that the United States had “no defense treaties with Kuwait, and there are no special defense or security commitments to Kuwait.” The next day, the American ambassador April Glaspie told Saddam directly that Washington had “no opinion on the Arab-Arab conflicts, like your border disagreement with Kuwait,” adding that the issue “is not associated with America.” Historians still argue whether this was an unwitting green light or ordinary diplomacy misread; Glaspie later insisted she never imagined Saddam would swallow all of Kuwait. Washington’s defenders point to a separate instruction cable that same month affirming American support for Gulf sovereignty and for its own vital interests in the region. Both messages went out. Only one of them addressed Kuwait specifically, and it disclaimed any obligation.
So why did it fight? Not for Kuwait itself. It fought in large part because a single hostile strongman controlling both Iraqi and Kuwaiti reserves — and looming over Saudi Arabia’s — would have put a fifth of the world’s oil under one unfriendly hand. That is the Carter Doctrine working exactly as written: not defending an ally out of loyalty, but defending the oil balance out of interest. 1991 is not the exception to the pattern. It is the clearest proof of it. The Gulf simply mistook a convergence of interest for a bond of protection.
The price for protection
The convergence did not last. Across the following decades, the United States drilled its way toward energy independence; the shale boom turned the largest importer of Gulf crude into a net exporter. The oil that American power still underwrote increasingly flowed not to Houston but to Asia. And once Washington no longer drank from the well, the well’s defense slid down its list of concerns. Which returns us to Abqaiq, and to the tweet. In 1991 an attack on Gulf oil threatened the American economy, and the response was half a million troops. In 2019 an attack that erased half of Saudi production threatened Asian buyers and Saudi balance sheets, not American ones — and the response was a reserve release and a shrug. The guarantee had not been revoked. Its underlying bargain had quietly changed.
Trump had already said it aloud. At a rally in Mississippi in October 2018, he described a conversation with the Saudi monarch: “King — we’re protecting you — you might not be there for two weeks without us — you have to pay for your military.” It was not an isolated slip. That same week he complained that Washington was “subsidising” Saudi Arabia’s military, listing the kingdom alongside Japan and South Korea and asking why wealthy countries were not paying — all while pressing OPEC to bring oil prices down. Protection and oil in the same breath, and a price attached to both. The relationship the Gulf had understood as an alliance was being described by the guarantor himself as a service, billed monthly.
The Gulf’s rulers are not naive, and by the mid-2020s they had read the ledger. What is remarkable is that they kept paying anyway. Across the spring of 2025, the three wealthiest Gulf capitals committed more than two trillion dollars in investment and trade pledges to the United States: Saudi Arabia, some 600 billion announced during Trump’s May visit to Riyadh, Qatar 1.2 trillion the White House described as economic exchange, and the UAE a 1.4 trillion ten-year framework announced two months earlier. Anchoring the Saudi package was a 142-billion-dollar arms deal, billed by the White House as the largest in history — nearly a quarter of the kingdom’s entire commitment, spent on the tools of a protection it was also paying for in influence. Fact-checkers noted that several pledges exceeded the pledging countries’ own economies and that most were aspirational rather than banked. The Gulf was not buying a guarantee. It was buying, at extraordinary cost, a receipt for protection.
Then came the test. Qatar had already been a target that year. In June 2025, hours after American bombers struck Iran’s nuclear sites, Iran fired missiles at al-Udeid — the largest American military base in the Middle East, sitting on Qatari soil. Tehran warned Doha and Washington in advance; the base was cleared, nothing of consequence was hit, and Trump publicly thanked Iran for the early notice. Qatar condemned what it called brazen aggression and reserved the right to respond. But the choreography told its own story: Arab ground had become the stage on which two other powers settled a score, with both of them in on the timing.
Three months later the second strike came, and it was not choreographed. On 9 September 2025, Israeli aircraft hit a residential district of Doha, killing six people including a Qatari security officer — the first Israeli attack on a Gulf state, and the first time one major non-NATO American ally had bombed another. Washington’s response was, on its face, everything Doha could have asked for. Trump publicly rebuked Israel and said the strike was “not a decision made by me.” He compelled Netanyahu to apologize to the Qatari prime minister by phone from the Oval Office. And on 29 September he signed an executive order titled Assuring the Security of the State of Qatar, declaring that the United States would regard any armed attack on Qatar’s territory, sovereignty, or critical infrastructure as a threat to its own peace and security, and would answer with all lawful and appropriate measures, military ones included. Analysts called it unprecedented for any Arab country — Egypt, Jordan, Bahrain and Saudi Arabia have close security relationships with Washington, but none of them hold an explicit guarantee. Riyadh had pursued exactly such a treaty and failed to get one.
Look at what it actually was. Not a treaty, which would have required a Senate unlikely to provide one, but an executive order — an instrument any future president can reverse with a signature. And in its own general provisions, Executive Order 14353 states that it is not intended to, and does not, create any right or benefit enforceable at law or in equity by any party against the United States. One of the most explicit security assurances ever extended to an Arab state arrived with a clause confirming that no one could hold Washington to it. The Associated Press noted at the time that it was unclear what weight the pledge would carry. The answer arrived within five months. When the war with Iran opened on 28 February 2026, Qatar — holder of the written American assurance it had waited a generation for — was struck by hundreds of missiles and drones. Saudi oil facilities were hit. Iranian missiles fell on residential areas of Dubai and Abu Dhabi. American aircraft flew the campaign from Gulf runways while the Gulf absorbed the retaliation for hosting them.
When the umbrella failed
And then came the slower injury, the one that goes to the heart of the bargain. Iran had effectively shut down normal traffic through the Strait of Hormuz. Crude and LNG movements through the waterway collapsed by roughly nine-tenths; Aramco’s chief executive put the loss at more than 2.6 billion barrels of crude removed from global supply, and warned that rebuilding inventories could take some eighteen months even if the strait reopened immediately. Washington did respond, and forcefully: a naval blockade of Iranian ports from April, an air campaign along the strait, escorted convoys. By August the vice president was calling the strait the administration’s central focus and defining success precisely — the same volume of oil and gas out of the Gulf as before the war. Not the security of the states that produce it.
The flow. Meanwhile, the campaign meant to restore that flow was drawing the retaliation that fell on Gulf soil, until the Saudi crown prince telephoned Trump to raise his concerns about further American strikes, and Trump called them off. That is where forty-six years of guarantee had arrived: the protected asking the protector, please, to stop protecting. The Gulf had bought the umbrella three times over — in bases, in dollars, and at last on paper. It still stood in the rain.
None of this means the Gulf is powerless, or that Washington is now irrelevant, and the counter-argument deserves a hearing. The United States did liberate Kuwait. Its bases do deter threats that would otherwise materialize. Its navy is, at this moment, escorting Gulf shipping. And no other power — not China, not Russia, not Pakistan — can currently replicate what America provides in missile defense, intelligence coordination, and naval protection; Gulf officials know this better than their critics do, which is why the hedging is a widening of options rather than a divorce.
What has changed is not the Gulf’s need for American capability. It is the Gulf’s belief that the capability comes with a promise attached — that it will be exercised for them, rather than around them. Deterrence that evaporates the moment the threat spares American interests is not a guarantee; it is a weather pattern. As Allison Minor, a former Trump National Security Council official, put it this year: the idea of the United States as security guarantor in the Gulf is already gone.
That is what produced the scramble of 2026. On 17 September 2025, eight days after the strike on Doha, Saudi Arabia signed a mutual-defense pact with nuclear-armed Pakistan. In May 2026, with Iranian missiles falling, it invoked the pact and Pakistani troops deployed. On 7 August 2026, in Mecca, Saudi Arabia signed a further joint-defense agreement with Turkey and Pakistan — nearly a year in negotiation — its mutual-defense clause clear, its guarantor conspicuously not American. Riyadh was careful to insist the pact represents no orientation toward a military axis and comes at no expense to its international relationships, and analysts cautioned that this is not a NATO in miniature and not a new bloc. Washington offered no immediate public response.
Ankara, meanwhile, was already looking past the three. The day after the signing, Turkish Foreign Minister Hakan Fidan said he expected Egypt to join once a few technical issues were resolved, calling Cairo a natural partner, and confirmed that a ministerial committee and a permanent secretariat in Saudi Arabia would be established. Cairo said nothing. Egypt has long been wary of binding defense commitments, and an earlier Turkish push for a quadrilateral arrangement went nowhere. But the direction of travel is difficult to mistake. What was signed as a three-country pact is being built as an institution — a secretariat, a committee, and a door deliberately left open. These are not the moves of a bloc confident in its patron. They are the moves of one that has looked up and seen the sky was never really there.
Egypt’s late president Hosni Mubarak reportedly put it more bluntly to his own foreign minister: whoever shelters under the Americans stands naked. For forty-six years the Gulf mistook the shadow of American interest for a roof, and arranged its security, its spending, and its sense of safety beneath it. The war of 2026 did not tear the roof away. It simply turned on the light, and showed that the shelter had only ever covered the oil — and that the people underneath had been standing in the open the entire time.
The day after Mecca, an Iranian missile struck another Emirati tanker in the Strait of Hormuz. The signatures had changed. The exposure had not.
