When Saudi Arabian energy minister Prince Abdulaziz bin Salman took the stage at the 29th St. Petersburg International Economic Forum (SPIEF) on 4 June, he delivered a line the room received as composure and the oil market received as instruction: "We are a resilient energy supplier; we have been and will remain so under all circumstances." Coming from any other energy minister, at any other forum, it might have read as boilerplate. Coming from the Saudi minister at Vladimir Putin's showcase event, two months after the Strait of Hormuz closed, it read as something more considered: a public articulation of exactly what the Russia-Saudi partnership has, against considerable odds, managed to retain.
Saudi Arabia served as guest of honour at SPIEF 2026—the most prominent such designation in the forum's history—in a year that Russia and the Kingdom mark 100 years of diplomatic relations. Prince Abdulaziz led more than 200 officials to St. Petersburg, the largest Saudi delegation the forum has seen. Around 30 agreements were signed on the sidelines, covering energy, investment, education, tourism and humanitarian cooperation, with bilateral trade relations valued at $4b.
"We are a resilient energy supplier; we have been and will remain so under all circumstances" Prince Abdulaziz bin Salman, Saudi energy minister
The centennial was cited at every turn. Kirill Dmitriev, the head of the Russian Direct Investment Fund and Moscow's special presidential envoy for Saudi economic cooperation, described the partnership as now operating at a "powerful strategic level" — and immediately volunteered that it had not always looked that way. "We used to have not very good relations," he said. That admission was not embarrassment. It was the point. The distance the relationship has travelled—from mutual suspicion to institutional coordination to centennial guest-of-honour status—is precisely the argument for its durability.
Surviving a decade of stress tests
In 2016, Russia—historically resistant to any formal coordination with OPEC—agreed to a production framework with Saudi Arabia that gave birth to OPEC+. The founding logic was seen as mutually beneficial: both countries had suffered under the prolonged low-price environment that followed the 2014 price collapse, and both needed oil revenue the unmanaged market was not delivering.
What happened next was a stress test that would have broken most bonds. The 2020 price war, in which Saudi Arabia flooded the market after Russia declined to agree to deeper COVID-era cuts, nearly destroyed the arrangement before it had proven its strength. Prices collapsed. Both countries absorbed severe fiscal pain. And then—critically—they rebuilt. The post-pandemic production management that followed produced the price environment both countries needed, and the OPEC+ framework emerged from that episode not weakened but institutionally hardened: its members had now seen what defection cost and had chosen, with full knowledge of the alternative, to recommit.
That will last long in the memory. A partnership that has already survived an open price war between its two anchor members, a global pandemic that destroyed demand overnight, a Ukrainian conflict that placed Riyadh and Moscow on opposite sides of the most significant Western sanctions regime in decades, and now a Gulf war that has severed Saudi export routes while leaving Russian ones intact—that partnership has been tested across nearly every dimension that could plausibly break it.
Saudi Arabia and Russia remain the two largest producers inside the OPEC+ framework, and the coherence of their coordination is the single most consequential variable for where crude settles. That structural fact has been true through every disruption of the past decade and will remain true through whatever follows.
The new divergence
The Strait of Hormuz closed at the start of March 2026, following US and Israeli military operations against Iran that began in February. The IEA called it "the largest supply disruption in the history of the global oil market". More than 14m b/d of Gulf production was shut down. Saudi Arabia's actual production has fallen to below 7m b/d against a nominal quota of more than 10m b/d. The Kingdom's spare capacity—the strategic asset underpinning its authority inside OPEC+—had become largely theoretical. The barrels existed, but they could not reach the market. For Russia, the situation was the opposite. Its production routes were unaffected by Hormuz. The US temporarily lifted sanctions on Russian oil in floating storage, making it available to a larger pool of buyers.
While Saudi Arabia absorbed Iranian attacks and watched its export capacity contract, Russia sold oil at prices elevated by the same crisis. Saudi Arabia is unhappy about Russia's support of Iran. Russia wants to ensure Riyadh does not join Western Ukraine-related sanctions regimes. Saudi Arabia has longer-term goals around preventing a supply glut; Russia has a more short-term need to refill its war-depleted coffers.
These are real tensions. They are also, by the standard of what this partnership has already absorbed, familiar ones. The two countries have maintained production coordination through sharper divergences than a difference in export-route geography. The Hormuz crisis is the most acute stress the relationship has faced since the 2020 price war—but it is a stress on a framework that was specifically designed and has repeatedly proven its ability to hold under pressure.
Thirty agreements and a $10b ambition
Earlier in 2026, a Russian delegation visiting Riyadh signed about 90 bilateral agreements, making the SPIEF package an addition to what is becoming an institutional relationship built on pace and volume. The Russian-Saudi Business Council set a $10b trade target, but its own chairman named payment system restrictions as the primary obstacle. The candour about the obstacle was useful: it identified the specific constraint—sanctions-related payment architecture—rather than pretending it does not exist. Identifying a constraint is different from being defeated by it. The relationship has a track record of finding workarounds where the incentives are large enough.
A bilateral visa-free travel agreement entered into force on 11 May 2026, allowing citizens of both countries to visit for up to 90 days per year. Beyond crude oil, increasing attention is being devoted to petrochemicals, hydrogen technologies, digital innovation, logistics and industrial partnerships. The Vision 2030 diversification agenda creates genuine alignment of interest with Russian capabilities in nuclear energy, agriculture and metallurgy. As the relationship's centre of gravity gradually shifts from pure oil-price coordination towards a broader commercial and technological base, its resilience to any single shock—including an oil market shock—increases further.
The OPEC+ production decision
Two days after Abdulaziz's SPIEF address, seven OPEC+ countries agreed to a 188,000b/d production increase for July, the fourth consecutive monthly hike since the Hormuz closure. Saudi Arabia and Russia each contributed 62,000b/d—equal shares, a formal statement of continued parity. While critics draw attention to the pointlessness of the near-term market mechanics, they are missing the institutional point. The decision to keep coordinating—to keep showing up, to keep voting symmetrically, to keep the framework intact even when it cannot do what it was designed to do—is itself the signal. The partnership is maintaining its institutional discipline precisely because both sides understand the framework's value is long-term and that abandoning it in a crisis would be the most expensive mistake either side could make.
At the current pace, the voluntary cuts will be fully unwound by September should OPEC+ maintain monthly hikes of 188,000b/d. When Hormuz reopens—as it will, eventually—OPEC+ will be positioned to manage the supply re-entry. That the two anchor members are still coordinating through the disruption rather than defecting from it is the reason that positioning will be credible.
Ten years down, decades ahead
The honest case for the durability of the Saudi-Russian partnership is not that the relationship is without tension. It plainly is. It is not that the interests are perfectly aligned. They plainly are not. The case is simpler and more empirical: this partnership has now been stress-tested across an extraordinary range of adverse scenarios—a founding price war, a pandemic, a European land war, a Gulf conflict and the exit of the UAE from OPEC+—and has emerged from each of them functionally intact.
Saudi Arabia is likely to continue diversifying its international partnerships in the aftermath of the current conflict, adjusting to long-term divergences from US regional interests. Russia needs the relationship's legitimising function and its market access. Neither side has a better alternative for managing global oil markets, and both know it.
The structural logic that produced OPEC+ in 2016 has not weakened
The structural logic that produced OPEC+ in 2016 has not weakened. Global oil demand continues to grow. The energy transition is real but slower than its advocates projected, and the window of significant oil revenue—the window both countries are managing for—will remain open for well into the future. The payment infrastructure problem is solvable with sufficient political will. The Iran divergence is a genuine complication, not a terminal one; both countries have lived with it since 2016 and managed around it.
That the two countries used to have poor relations is a testimony to how far they have come. The same institutional capability that built the relationship from mistrust to strategic partnership through a decade of disruption is the capability that will be called on to navigate whatever comes next. The centennial at SPIEF was a ceremonial marker, but the decade-long OPEC+ one the real milestone.