Hours after Israeli and US strikes struck Tehran, Russia’s UN ambassador publicly condemned the attacks as an unprovoked act of aggression. Yet despite being one of Iran’s few reliable partners—and having clear interests in Tehran’s survival—Moscow stopped short of any military intervention. The reasons lie in pragmatic cooperation, strategic calculations and geopolitical limits.
Practical cooperation, not an alliance
Russia and Iran collaborate where it suits Russian interests. A major project is the North–South transport corridor, a roughly 7,200-kilometre multimodal route linking Russia, Iran and India (via Azerbaijan), agreed two decades ago and largely constructed. That corridor has gained importance since Russia’s invasion of Ukraine disrupted conventional transit links.
Military and security ties have also grown. Since 2023 Tehran supplied Shahed-style attack drones that changed parts of the fighting in Ukraine, and while Russia has since localized and improved production, the original systems were significant. Open-source reporting and analysts have pointed to intelligence exchanges and transfers of missiles and ammunition as further evidence of cooperation.
But the relationship is instrumental rather than ideological. Moscow treats Tehran as a dependable partner in a group of sanctioned states, trading practical know-how on evading restrictions and mutually useful technologies. Iran’s long experience navigating sanctions has been a useful model for Moscow.
Why Moscow is unlikely to intervene militarily
Despite these ties, direct Russian military intervention in a US–Israel campaign against Iran is unlikely. Moscow and Tehran are not bound by a mutual-defense treaty, and Russia has limited appetite for a confrontation with the United States and its allies that could expand into a broader war.
Observers also point to informal understandings that have limited friction between Russia and Israel. Tehran reportedly expected more than expressions of diplomatic solidarity—hoping for tangible weapons, deeper intelligence support and a deterrent posture from Moscow—but many analysts say that was a misread of Russian priorities. Russia and China face their own strategic pressures, especially around Ukraine, and have so far opted for political and material backing that avoids direct military escalation.
Tehran’s history of suspicion toward Moscow also factors in: Iranian leaders have periodically complained that Russia puts its own interests ahead of Tehran’s. That skepticism may have made Iran overestimate Moscow’s willingness to take major risks.
Potential benefits and risks for Russia
A wider conflict in Iran could yield short-term advantages for Moscow. It might pull Western focus and resources toward the Middle East, reducing diplomatic and military pressure on Ukraine. Energy-market turbulence from disruptions in and around the Strait of Hormuz could keep oil and gas prices higher, which would help Russian export revenues.
However, the downsides are significant. The collapse of Iran’s government would be a heavy long-term strategic loss for Russia: it would shrink the informal anti-Western coalition Moscow cultivates across the Middle East and Eurasia, weakening Russia’s regional influence. Moscow must weigh any short-term gain against the risk of losing a partner and the broader damage to its geopolitical position.
What comes next for the relationship
Analysts are divided on the future of Russia–Iran ties. Some argue the current crisis could strain relations, with Moscow and Beijing treating Iran as a bargaining asset and readying to work with whatever regime emerges next. China appears similarly cautious, preferring stability and continuity of influence over open commitment.
Others note incentives for Tehran to stay close to Moscow—given Iran’s estrangement from the West and Russia’s veto power at the UN—and for Russia to preserve ties with a regional partner. For now, both sides have reasons to keep the relationship intact, even if its depth and reliability are being tested.
In short, Moscow’s restraint reflects a balance of interests: Iran matters to Russia strategically and economically, but those ties do not automatically trump the risks of direct confrontation with the US and Israel, competing priorities such as the war in Ukraine, or the long-term costs should Iran’s regime collapse.