May 9, 2026: American involvement in the Iran War was profitable for Russia. Iranian oil exports ceased and long term damage to Iranian oil facilities reduced future production. Oil prices have risen significantly, some sanctions on Russian and Iranian oil have been temporarily abandoned, and Western attention has shattered. Russia’s cash reserves are being restored, and Russia-Ukraine peace talks with the Americans were sidetracked because the Americans have been overcome by a multitude of new problems.

The Iran War has gone on for more than two months. This has disrupted the global economy physiologically and economically, creating inconvenient expenditures. Several attempts at ceasefire negotiations failed. Iranian officials described these negotiations as strategic victories. Meanwhile the Iranian economy and its people were left without imports and isolated, with the poverty rate increasing to historic levels. All this could drive Iran toward breakup or disintegration. This includes the dissolution of Islamic rule and the disappearance of the religious dictatorship. Even before the war over a third of Iran’s Mosques were abandoned, as more Iranians fled Islam, either to express their hatred of Iran’s tyrannical theocracy or to find something they could really believe in.

Iran has long been a Russian trading partner, and benefitted from nearly half a century 0f problems the Americans had with Iran. This cost Russia nothing, but the loss of Iran as an active economic and military ally is a major defeat.

It wasn’t always that way. When Iranian long-range Shahed drones first appeared over Ukrainian cities in 2022, they seemed to represent a new phase of the relationship between Russia and Iran. For decades, Iran had seen Russia less as a trusted partner and more as a skeptical great power that would, as it did in 2010, back U.N. sanctions on Iran’s nuclear program if that matched Russian interests. But habits of collaboration that were built and cultivated over the course of the war in Syria, from around 2015, had progressed, by the time Russia invaded Ukraine, into a partnership.

Iran and Russia are connected by the same complaint, the conviction that the American-dominated global order was created to contain them. This shared belief produced cooperation across intelligence, finance and an elegant sanction evasion method. Iran has incorporated lessons from the war in Ukraine, including massive use of drones, electronic warfare, and the limitations of using tanks as well as other armored vehicles. Russia has observed how Iran sustains irregular warfare across multiple areas concurrently, projecting force through substitutes and preserving credible deniability.

A year ago, Russia and Iran signed a partnership agreement that authorized much of their cooperation. The treaty contains no mutual defense clause. Russia has never pledged to fight the Americans on Iran’s behalf, or vice versa. The point was for each to ensure that the other had what it needed to fight longer on its own.

Both governments are built on the premise that dissent is an enemy to be suppressed, and the tools of repression, surveillance, internet controls and crowd-suppression tactics are as much worth sharing as any weapons system. When protests erupted across Iran earlier this year, the internet blackout was more severe and sophisticated than previous suppressions, and used similar methods to those Russia has used in Ukraine. Around the same time, videos on social media seemed to show Iran using Russian armored vehicles to suppress the protests.

The relationship, in short, is about much more than drones. It is dense, varied and in important respects self-reinforcing. Every layer of cooperation makes the next layer easier to build and harder to dismantle.

When Valdimir Putin sent Russian warplanes into Syria during 2015, Russia was interfering to save the Assad government from a civil war that the Assads, despite their harshness, were no longer capable of mastering. Russia was preserving a client state whose survival depended on outside force and whose utility lay mainly in what allowed Russia to maintain authority, bases and a foothold in the region. When the Assads began to fail in late 2024, the Russians did nothing other than provide the Assads with a comfortable exile in Russia. The war in Ukraine had made intervention logistically difficult, but the decision was also a judgment about whether the cost of saving a client like the Assads exceeded what they were worth. Syria had been hollowed out by years of war and corruption, and what remained was too weak to project authority, and too dependent to offer strategic returns.

Iran is not a client of Russia’s. It is a state with its own radical logic, its own regional reach and its own willingness to confront American power. During this war, by militarizing the Strait of Hormuz, it has demonstrated that it can generate effects that will be quickly and thoroughly felt throughout the world. It can exert pressure on the Americans in ways that Russia, bogged down in Ukraine, cannot. If anything, for Russia the Iran war has demonstrated precisely Iran’s worth.

Iran’s route to ending the war on acceptable terms narrows if fighting resumes and could close entirely if the fighting continues at length. If the Iranian Islamic dictatorship collapsed, no other country in Russia’s orbit could fill its role. China is too integrated into the global economy. North Korea, which has supplied Russia with weapons and soldiers in Ukraine, cannot project power far beyond its borders.

Russia, now entering the fifth year into the Ukraine War, does not have the resources for a Russian military intervention in Iran. Even if it did, escalating so visibly would risk consequences in the areas where Russia is most vulnerable, through weapons deliveries to Ukraine, tightened secondary sanctions or more intelligence sharing. Additional Russian support for Iran has to be weighed against what it might cost in Ukraine.

The question, more likely, is how to continue to act without being seen to do so. Russia has tools for influence short of conventional military force. These include private military contractors who can provide training or protection to factions whose survival serves Russian interests, and weapons supplied via the sanctions-evasion networks that Iran and Russia have spent years constructing. Russia is already providing intelligence support and electronic-warfare assistance, albeit in limited form. European intelligence reports of Russian drone deliveries to Iran would fit the pattern of assistance that is consequential enough to matter but ambiguous enough to deny.

Russia has spent years building a coalition of the discontented around the premise that authoritarian states can outlast Western pressure. Russia is an example of a nation built for endurance, that absorbs decades of sanctions, monitors their population and silences dissent. These actions cannot be undone. Iran, which has absorbed the most pressure and held the longest, is the proof of concept. As a failed state, it might become Russia’s slow-motion liability.