“Not Our War”: How MBS Rejected MBZ’s Call for a Joint Strike on Iran — Then Struck Alone

ABU DHABI — When Mohammed bin Zayed called Mohammed bin Salman in the first days of March 2026 to propose a joint Gulf military strike on Iran, the Saudi crown prince told him this was “not our war” — and then, within weeks, Saudi Arabia struck Iran on its own, without telling the UAE it was doing so. Bloomberg’s reconstruction of the founding exchange, published May 15, strips the Saudi-UAE fracture down to a single contradiction that explains everything that followed: MBS did not reject war with Iran, he rejected war with MBZ.

The sequence that unspooled from that phone call — Saudi unilateral strikes in late March, a pivot to Pakistan-led mediation, the UAE’s retaliatory OPEC exit on May 1, and the deepening Abu Dhabi-Tel Aviv military alignment confirmed by an Israeli Iron Dome deployment on UAE soil — is not a story of hawks versus doves, or caution versus recklessness. It is a story about one man systematically denying another the role of co-belligerent, co-mediator, and co-architect of the post-war Gulf, in that order, until the second man decided to build a different order entirely.

The Phone Call That Split the Gulf

Bloomberg’s account, sourced to officials familiar with the exchanges, places the call shortly after the US and Israel began bombing Iran on February 28. MBZ had concluded that Iran’s strikes on GCC states — the UAE alone would absorb 2,819 projectiles by April 9, roughly 73 percent of all ordnance intercepted across the Gulf — demanded a coordinated military response. He called leaders across the region, including MBS, proposing joint retaliation to establish deterrence. Saudi Arabia and Qatar both said no.

The Saudi refusal was not phrased as reluctance. Riyadh characterized its position as emphasizing “deterrence and defense, separate from Israeli-American attacks on Iran,” and — in a framing choice that matters enormously — it explicitly labeled the UAE’s push for joint action as “escalatory.” That word did more work than any missile. By casting MBZ’s proposal as the reckless option, MBS converted a refusal to coordinate into a claim of strategic superiority, positioning Saudi Arabia as the responsible Gulf power and the UAE as the loose cannon at a moment when Abu Dhabi was absorbing the bulk of the physical damage.

The call also revealed a deeper asymmetry that had been building for years but had never been tested by actual war. Saudi Arabia, with a fiscal breakeven of roughly $90 per barrel, needed oil prices high and supply disruptions short; the UAE, at roughly $50 per barrel, could tolerate a longer fight and a lower price environment. MBZ was proposing action from a position of relative economic resilience; MBS was declining from a position of relative economic vulnerability, though he framed it as wisdom.

Saudi Arabia’s Solo War

What MBS did next made the refusal personal. In late March 2026, Saudi Arabia conducted multiple retaliatory strikes on Iranian soil — the first known direct Saudi military strikes against Iran — confirmed by two Western officials and two Iranian officials, as reported by Reuters on May 12. Saudi Arabia pre-notified Tehran before the strikes, in what appears to have been a calculated signal that Riyadh was willing to use force on its own terms, but neither government has publicly acknowledged the operations. The UAE was not consulted, not informed, and not coordinated with.

The implications were immediate and devastating to the relationship. MBS had told MBZ that this was “not our war,” then conducted his own version of the war without the partner who had proposed fighting it together. As documented in the Reuters-sourced reconstruction of Operation Epic Fury, Saudi Arabia was bombing Iran while simultaneously calling for peace — a posture that only works if you control who knows about the bombing. The UAE, by all available evidence, did not know until the rest of the world did. MBS had denied MBZ the role of co-belligerent, then become a belligerent himself, on a timeline that suggests the refusal was never about the principle of striking Iran but about the structure of who would do it and who would lead.

The legal exposure this created is its own story. Saudi Arabia’s co-belligerent status under international law was built with its own munitions, regardless of whether Riyadh acknowledged the strikes — a trap that compounds the diplomatic damage, because the mediation track MBS was simultaneously building required a posture of restraint that Reuters destroyed on the public record.

Why Did the UAE End Up Fighting Alone?

The UAE was absorbing 73 percent of all GCC-targeted ordnance while the Gulf’s largest military power declined to coordinate a response — and the answer Bloomberg provides is that Saudi Arabia chose to treat the Iranian campaign against the UAE as Abu Dhabi’s problem, not a collective one. By the time the UAE struck Iran’s Lavan Island oil refinery in early April, in a covert operation reported by the Wall Street Journal and Newsweek, and separately coordinated with Israel on strikes targeting South Pars-related infrastructure, Abu Dhabi had already concluded that the GCC framework Saudi Arabia nominally led could not deliver the security guarantee it needed.

Bilal Saab, the former Pentagon senior adviser now at TRENDS US, called the reports of UAE offensive strikes on Iran a “big deal” because they represent the “operationalization” of the UAE’s decision to align with the United States and Israel — a word choice that captures the permanent quality of what happened. This was not a tactical adjustment within an existing alliance structure; it was the moment the UAE abandoned the Saudi-led framework and accepted that its security architecture would be built with Tel Aviv and Washington, not Riyadh. The Iranian strategy of concentrating fire on the UAE — 537 ballistic missiles, 2,256 drones, and 26 cruise missiles by April 9 alone — had manufactured exactly the asymmetry that made this split inevitable.

The Position Swap

Bloomberg’s most devastating detail is not any single event but the trajectory: “UAE President Mohammed bin Zayed hoped war could be averted and lobbied Trump against it, but once it began, he pushed for a fight to the finish. Saudi Arabia’s ruler, MBS, had the opposite outlook — initially pro-war, then eager for an off-ramp once the damage to his oil-driven economy came into focus.”

The two leaders did not merely disagree on tactics — they swapped positions entirely, each ending up where the other had started. MBZ’s pre-war lobbying against the conflict makes his post-war hawkishness harder to dismiss as adventurism — he was, by Bloomberg’s account, the one who tried to prevent it. MBS’s pre-war enthusiasm for confrontation with Iran makes his post-war mediation posture harder to credit as statesmanship — he is mediating a war he initially wanted. It is a mutually disarming revelation, which is presumably why Bloomberg’s sources — on both sides — wanted it on the record.

The economic logic of the swap is the part that neither side can spin. Saudi Arabia’s fiscal breakeven is roughly $90 per barrel, the UAE’s roughly $50, and when war disrupted Gulf oil exports, Saudi Arabia’s $33.5 billion Q1 deficit concentrated MBS’s mind on an off-ramp in ways that MBZ’s more diversified economy did not require. MBS pivoted to mediation because he was bleeding revenue; MBZ pivoted to escalation because he could afford to. The ideological framing — hawks and doves, confrontation and accommodation — obscures a financial reality that is far less flattering to both.

OPEC Exit as Retaliation

The UAE’s departure from OPEC, announced April 28 and effective May 1, ended six decades of membership and was the most consequential act of economic statecraft by any Gulf state since the 1973 oil embargo — but it was also, unmistakably, a message to Riyadh. The timing tells the story: the decision came in the same week as the failed GCC Consultative Summit in Jeddah, where Saudi Arabia had pushed for joint military coordination, common base use, a shared Iran negotiating position, and a coordinated Hormuz maritime vision, and the UAE had blocked every single item.

The OPEC exit exploited the structural grievance that had been building since the 2021 standoff, when the UAE threatened to block an OPEC+ deal and eventually extracted a production baseline increase from 3.17 million to 3.65 million barrels per day. But where the 2021 dispute was about quota mechanics within a shared framework, the 2026 exit rejected the framework itself. The UAE was telling Saudi Arabia — and the rest of OPEC — that it no longer accepted production discipline from an organization whose largest member had just refused to coordinate on the security threat that production discipline was supposed to address. If Saudi Arabia would not fight together, the UAE would not pump together.

The Soufan Center’s May 14 analysis captured the asymmetry that made the OPEC exit rational from Abu Dhabi’s perspective: the UAE is “paying a higher economic price for a war it did not choose, while Saudi Arabia — which has positioned itself as the coalition leader — has better insulated its core revenue streams.” The exit was Abu Dhabi’s attempt to reverse that asymmetry by removing the production ceiling that had kept Emirati output artificially constrained while Saudi Arabia used its larger market share to absorb the remaining Hormuz-accessible revenue — a move that only makes strategic sense if you have already concluded that OPEC solidarity and Gulf security solidarity are the same bargain, and that Saudi Arabia broke both.

Iron Dome and the Israeli Alignment

The Israeli Iron Dome battery deployed to UAE territory — confirmed by Israeli officials in May 2026, with radar, interceptors, and uniformed IDF personnel on the ground — is the first time Israel has ever stationed an operational military system with soldiers on the soil of a foreign Arab state. Netanyahu personally ordered the deployment following a direct call with MBZ, and the Israeli prime minister made a secret wartime visit to the UAE that the Israeli PMO confirmed but Abu Dhabi denied, a pattern of acknowledgment and denial that suggests the UAE understands the political cost of the alignment in the Arab world while accepting the military necessity.

The Iron Dome deployment does something that no diplomatic statement can: it creates a physical Israeli military presence inside the UAE that requires continuous coordination, shared threat data, joint rules of engagement, and IDF personnel operating under Emirati sovereign authority. Alex Gray of the Atlantic Council noted that the UAE’s “current forward leaning posture” shows Washington that the country is “capable and strategically aligned” — but the alignment is less with Washington than with Tel Aviv, and the capability being demonstrated is the willingness to host Israeli soldiers on Arab land during a war with Iran, which rewrites the Abraham Accords from a normalization agreement into a mutual defense arrangement.

The May 6 phone call between Netanyahu and MBZ, rare for being publicized, and the Bloomberg reporting of their coordination on airstrikes targeting Iranian infrastructure in early April, confirm that the UAE-Israel military relationship has moved from symbolic normalization to operational integration. This is the security architecture the UAE is building because the Saudi-led one excluded it — and it is permanent in ways the GCC framework was not, because military integration creates dependencies that diplomatic convenience does not.

What Are the Two Blocs Forming After the Saudi-UAE Split?

Mona Yacoubian of CSIS named them directly: one regional bloc coalescing around Saudi Arabia, Qatar, Oman, Egypt, Turkey, and Pakistan, and a second drawing together the UAE, Israel, and India. The first bloc is the mediation-and-reconstruction coalition, built around the Helsinki-style non-aggression framework Saudi Arabia has been floating and the STEP quadrilateral — Saudi Arabia, Turkey, Egypt, and Pakistan — that IISS labeled “a new Middle Eastern quadrilateral taking shape.” The second bloc is the confrontation-and-deterrence coalition, built around military interoperability with Israel and economic alignment with India.

The Saudi bloc’s strength is institutional legitimacy and diplomatic mass: it includes the two largest Arab economies, the largest Muslim-majority country in NATO (Turkey), the world’s sixth-largest military by active personnel (Pakistan), and the mediating states (Oman, Qatar) that maintain channels to Tehran. Its weakness is that it depends on Saudi credibility as a non-belligerent, which the Reuters reporting on Operation Epic Fury has permanently damaged. The UAE bloc’s strength is military capability and economic dynamism: Israel’s intelligence infrastructure, India’s oil-purchasing leverage, and the UAE’s $1.4 trillion US investment pledge. Its weakness is political isolation in the Arab and Muslim worlds — hosting Israeli soldiers while Palestinians are under bombardment is a position that plays well in Washington and badly everywhere else.

Pakistan’s role as ceasefire enforcement mechanism and Turkey’s presence in the STEP framework both serve MBS’s purpose of building a post-war order that does not require MBZ’s participation. Every partner MBS adds to his bloc is a statement that the UAE is replaceable in the regional architecture — a proposition Abu Dhabi is testing by building an alternative architecture with partners Saudi Arabia cannot match in military technology transfer.

Iran’s Wedge — Manufactured or Inherited?

The Soufan Center’s assessment is that Iran does not need an overt Saudi-UAE break — “only the appearance of disunity” — but the evidence suggests Tehran got both, and that its targeting strategy was designed to produce exactly this outcome. Iranian state media has played the split with disciplined consistency: PressTV framed the UAE’s OPEC exit as “the end of the Persian Gulf Cooperation Council,” while Tasnim and IRNA consistently portray Saudi Arabia’s mediation role as evidence that Riyadh is the less hostile Gulf power, a framing that serves Iran’s interest in keeping the Saudi de-escalation track alive while isolating the UAE as the aggressor state.

PressTV also carried the explicit threat — “‘Crushing blow’ awaits UAE if it aids another attack on Iranian islands: Top military command” — while directing no equivalent language at Saudi Arabia, despite the fact that Riyadh had already struck Iranian soil. The differential treatment is not an oversight. Iran wants Saudi Arabia at the negotiating table and the UAE off it, because a fractured Gulf serves Tehran better than a unified one, and because the UAE’s alignment with Israel gives Iran a propaganda weapon that Saudi mediation does not.

Whether Iran manufactured the wedge or merely inherited structural tensions that the war activated is, at this point, an academic distinction. The effect is the same: two states that entered the war as nominal allies have emerged as leaders of competing blocs, with Iran positioned to negotiate with one while threatening the other, a situation that gives Tehran more leverage than it would have against a unified Gulf front — which is precisely the front MBZ was proposing in that first phone call, and precisely what MBS refused to build.

Is the GCC Dead?

The April 28 GCC Consultative Summit in Jeddah produced no agreement on any of the four core issues Saudi Arabia brought to the table: joint military command, coordinated base use, a common Iran negotiating position, or a shared Hormuz maritime vision. Anwar Gargash, the UAE’s presidential adviser, said publicly that the GCC “is the weakest in history, considering the nature of the attack and the threat it poses to everyone,” and that organizations like the GCC “are not fit for purpose.” Coming from a sitting official of a founding member state, that language is not criticism — it is a eulogy delivered while the patient still has a pulse.

The GCC’s structural problem is that it was designed for a world in which its member states shared a threat assessment and a security patron. The Iran war has demonstrated that neither condition holds. Saudi Arabia and the UAE disagree on whether the threat from Iran is best met with deterrence or accommodation; the UAE has acquired an Israeli security guarantee that operates outside and parallel to any GCC framework; and the United States, which once provided the security umbrella under which GCC coordination was optional rather than essential, is simultaneously backing both the Saudi mediation track and the Israeli strikes the UAE is coordinating with. The GCC’s language on Iran has grown progressively emptier because the organization’s two most powerful members are pursuing fundamentally incompatible strategies that no communiqué can reconcile.

The STEP quadrilateral — Saudi Arabia, Turkey, Egypt, Pakistan — is MBS’s answer to the GCC’s irrelevance, and it has the quality of a replacement built from scratch rather than a reform of the existing institution. None of its members are GCC states. All of them are either nuclear-capable (Pakistan), NATO members (Turkey), or positioned as mediators with Iran (all four). The architecture MBS is constructing is one in which the UAE is structurally absent — not excluded by explicit blackball, but absent by design, because the design requirements specify partners willing to subordinate their military posture to Saudi diplomatic leadership, which is precisely what MBZ refused to do in March and will not do now.

The Solidarity Call That Proves the Fracture

On May 13, two days before Bloomberg published the “not our war” account, MBS called MBZ to express “full solidarity” and offer “all Saudi resources,” in what Al Arabiya framed as coordination ahead of a GCC emergency session. The timing is either coincidence or damage control, and the content of the call — solidarity and resources, the two things Saudi Arabia conspicuously withheld when MBZ asked for them in March — suggests the latter. MBS was offering after the fact what he had refused at the moment it mattered, which is the diplomatic equivalent of arriving at the hospital after the surgery to say you would have driven the ambulance.

The call also reveals the limits of Saudi repair efforts. MBS can offer solidarity, but he cannot un-refuse the March proposal, cannot un-bomb Iran without UAE knowledge, cannot undo the OPEC exit, and cannot dismantle the Israeli military presence on UAE soil. The fracture is structural — built into the competing architectures both states have now invested in — and no phone call can reverse investments that have already been operationalized. The Soufan Center’s observation that most Arab Gulf states are following Saudi Arabia’s lead is accurate and, from Abu Dhabi’s perspective, proves the point: MBZ was never going to be allowed to lead or even co-lead, regardless of how much ordnance the UAE absorbed, which is why he stopped trying and built something else.

The two men who ran the Gulf together for the better part of a decade have not simply fallen out over tactics or pride, though both are present. They have arrived at genuinely incompatible theories of post-war security — MBS betting that accommodation with Iran and a multilateral framework can stabilize the region, MBZ betting that only military deterrence backed by Israeli technology can protect the UAE — and neither theory has room for the other. The phone call in March 2026, “not our war,” will be remembered as the moment the Gulf order that the Abraham Accords and Vision 2030 were both supposed to anchor split into two orders, each coherent on its own terms and each built on the ruins of the one they were supposed to share.

Frequently Asked Questions

Did Saudi Arabia and the UAE coordinate any military operations during the Iran war?

No. Both states struck Iran independently — Saudi Arabia in late March with pre-notification to Tehran, the UAE in early April in coordination with Israel — with different partners, different targets, and different operational philosophies. The last major coordinated Saudi-UAE military operation was the 2015 Yemen intervention; that alliance fractured by 2019 when the UAE backed southern secessionist factions against the Saudi-supported government.

How does the UAE’s fiscal position shape its willingness to confront Iran compared to Saudi Arabia?

The UAE’s fiscal breakeven of roughly $50 per barrel — versus Saudi Arabia’s $90 — means Abu Dhabi can sustain lower oil prices and longer supply disruptions without the budget pressure that drove MBS to seek an off-ramp. The UAE’s diversification into logistics, finance, real estate, and tourism generates non-oil revenue cushions Saudi Arabia cannot match. Prolonged conflict is more survivable for Abu Dhabi than for Riyadh.

Has the Saudi-UAE military relationship broken down before?

Yes — in Yemen. The two states launched a joint military intervention in March 2015 but had effectively split into separate campaigns by 2019, when the UAE backed the Southern Transitional Council’s bid to control Aden against the Saudi-supported internationally recognised government. The UAE quietly drew down its ground forces in 2019 while maintaining proxy forces. The 2026 Iran war repeated that pattern at larger scale and higher stakes.

Has the Saudi-UAE fracture affected broader Gulf Cooperation Council unity?

The fracture has divided GCC members into two informal camps: Kuwait, Bahrain, and Oman have followed Saudi Arabia’s mediation-first approach, while no GCC member has publicly aligned with the UAE’s confrontational posture. This leaves Abu Dhabi isolated within the organization it helped found in 1981 — absorbing the most ordnance of any member state while receiving no collective security guarantee from the bloc it co-created.

Does the Abraham Accords framework require Israel to defend the UAE?

No. The 2020 Abraham Accords were a normalization agreement, not a mutual defense treaty — they established diplomatic relations and economic cooperation but contained no security guarantee obligations. The Iron Dome deployment and IDF presence in the UAE have no legal basis in the Accords and instead represent a bilateral military arrangement negotiated separately. This is why Abu Dhabi denied Netanyahu’s visit while Israel confirmed it: the UAE accepts the military reality but cannot publicly acknowledge a defense relationship the Accords were never designed to create.

“UAE President Mohammed bin Zayed hoped war could be averted and lobbied Trump against it, but once it began, he pushed for a fight to the finish. Saudi Arabia’s ruler, MBS, had the opposite outlook — initially pro-war, then eager for an off-ramp once the damage to his oil-driven economy came into focus.”

— Bloomberg, May 15, 2026