Russian-Iranian relations are complex. While the two countries share broad opposition to Western influence, the balance of common, overlapping, and diverging interests is far more intricate than it appears. Despite the deepening of ties in recent years, Russia offered Iran little more than rhetorical support in the face of the Israeli-American military operation, prioritizing its regional balancing strategy while the Islamic Republic confronted what appeared to be an existential threat. This exposed contradictions and vulnerabilities not only in bilateral relations but also within the broader network of states aligned against the West.
Former deputy speaker of Iran’s parliament, Ali Motahari, voiced growing frustration in a post on X, noting that Russia refused to sell Iran the S-400 missile defense system. He argued that Moscow’s hesitation stemmed from fears Iran might use the system against the Israeli attack, revealing the superficial nature of what President Putin promotes as a “strategic partnership.”
Relations had reached an unprecedented level of normalization, especially after the war in Ukraine, culminating in the signing of a strategic partnership earlier in 2025. Yet the limited Russian support for Iran was striking, highlighting the nature of ties forged in recent years—particularly with Russia, China, and North Korea—as flexible, interest-driven arrangements rather than formal strategic alliances. Tehran’s efforts to purchase advanced Russian weaponry, including Su-35 fighter jets and Mi-28 attack helicopters, also stalled. According to Iran’s Shargh newspaper, key reasons included Russian production issues and diplomatic pressure from Gulf states, Israel, and the United States.
The Limits of a Military Alliance
Despite anti-Western rhetoric, Iran-Russia ties remain transactional, interest-driven, and devoid of binding commitments. The Israeli escalation not only underscored these limits but also raised serious questions about whether Tehran can rely on Moscow when its core interests—or even survival—are at stake. The imbalance is clear: Russia is a great power, while Iran is a major regional player.
Iran is among the few countries that actively supported Russia’s war in Ukraine, supplying drones, weapons, and military equipment. Some analysts describe this relationship as an anti-Western axis (alongside China and North Korea). Yet from Moscow’s perspective, ties have never evolved into a genuine alliance based on mutual obligations.
Tehran’s cooperation with Beijing, Moscow, and Pyongyang appears less about forging an effective alliance than about building transactional ties among non-democratic states. These partners prioritize strategic flexibility, ambiguity, and independence over binding commitments. Their shared goal is weakening U.S. global influence and entrenching themselves as key actors in a multipolar order. Still, this does not make them committed allies ready for mutual defense in existential crises.
If the U.S.-Israeli campaign against Iran was a crucial test, it highlighted the limitations of this axis rather than strengthening it. Rather than triggering coordinated anti-Western action, the crisis revealed just how fragile and transactional the cooperation is.
Iran and Russia share the aim of undermining Western influence and dismantling the U.S.-led rules-based order. Their collaboration—ranging from arms transfers to sanctions evasion in the context of the Ukraine war—serves this goal. Beyond that, however, their agendas diverge. Russia seeks global standing as a major pole in a multipolar world, while Iran has long pursued regional dominance across the Greater Middle East. Moscow and Tehran often diverge in areas central to Iran’s geopolitical priorities—such as the Levant, the Gulf, and the South Caucasus—where Russia prefers a balanced strategy, cultivating pragmatic ties with Iran’s rivals, including Israel, Turkey, and key Arab states.
Russia’s Balancing Act
Although Iranian drone shipments elevated bilateral ties, Western sanctions forced Russia to rely more heavily on Iran’s regional rivals: Azerbaijan as a transit hub for energy exports, Israel to dissuade it from arming Ukraine, Turkey in energy trade and sanctions evasion, Saudi Arabia in oil market management, and the UAE in diplomacy and finance.
Promised weapons deliveries to Iran—such as the S-400 system or Su-35 fighter jets—never materialized. Moscow fears upsetting the regional military balance in Iran’s favor, which could jeopardize its relations with key players. At the same time, Russia reduced reliance on Iranian drones by establishing local production facilities. North Korea’s massive shipments of ammunition, weapons, and even soldiers soon outweighed Iran’s contributions.
Declining Russian Standing
Russia remains Iran’s main arms supplier, providing air-defense systems, helicopters, and fighter jets. Yet Tehran’s reliance on the Russian S-300 system—which reportedly failed to stop incoming Israeli missiles—further undermines the credibility of Russian military technology. The evident lack of cohesion within the anti-Western bloc, combined with disappointing defensive performance, casts further doubt on Russia’s global reliability and strength.
For many experts, Moscow’s stance was not surprising. What was surprising was the signing of a “strategic partnership” earlier this year, which in reality fell far short of Iran’s ambitions. The agreement did not establish a military alliance nor entail direct obligations, but rather formalized the status quo with vague language like “affirm commitment,” “look forward to,” and “facilitate.” Expectations that it might include a North Korea-style mutual defense clause were dashed. Instead, both parties merely pledged not to aid a state attacking the other.
This was a clear sign Moscow has no intention of forming a military alliance with Tehran—and would not come to Iran’s aid if attacked by the U.S. or Israel. Russia no longer depends on Iranian military aid as it did in the first year of the Ukraine war, having advanced local drone production and gained the upper hand on the battlefield.
Moscow Needs Tehran Less
Unlike North Korea, Iran is unwilling to send troops to fight in Ukraine. Even in its own conflicts, Tehran hesitates to risk Iranian soldiers, relying instead on proxies. Nonetheless, its interest in Russian arms has grown amid military setbacks, from Hezbollah’s defeats in Lebanon to Assad’s downfall in Syria.
Moscow, however, increasingly turns to North Korea for greater military support. Carolina Hird of the Institute for the Study of War told the Kyiv Independent that “Russia has developed many of the capabilities it relied heavily on in the first years of the war—Shahed drones are a prime example. So, I’m not convinced that regime change in Iran would dramatically alter Russia’s ability to sustain its war in Ukraine.”
Reports suggest Russia now produces large quantities of Iran-designed Shahed-136 drones at a massive plant in Alabuga, effectively sidelining Tehran. According to a Western intelligence source, Moscow aims to master the full production cycle, leaving Iran frustrated and impatient over Moscow’s lack of reciprocity.
Tensions have been further exacerbated by Moscow’s weak support for Iran during its recent clash with Israel and claims that Russia may have had prior knowledge of Israeli strikes. Satellite imagery shows the Alabuga plant expanding so rapidly that Russia may even begin exporting Shahed drones—including to Iran itself.
How Moscow Benefited from the Iran Crisis
The U.S.-Israeli strikes on Iran provided Moscow with tactical advantages: diverting global attention from Ukraine, raising oil prices, and disrupting Western military aid to Kyiv. The escalation also gave Russia an opportunity to leverage ties with regional actors and present itself as a mediator—or at least to promote that image.
Moreover, the conflict reinforced Russia’s narrative to domestic and global audiences. By highlighting Western support for Israel against Iran—despite Tehran being the attacked party—Moscow underscored what it calls the selective application of Western principles, a message resonating across much of the Global South.
Yet the war also damaged Russia’s image as a pillar of the anti-Western bloc. While the West rallied to Ukraine’s defense as a test case for NATO and European security, anti-Western states showed the fragility of their own camp, raising doubts among other Russian partners about Moscow’s seriousness and capacity to provide support in existential crises.
Russia Seeks the Status Quo
Moscow’s restrained stance does not mean it disregards Iran’s fate. A weakened Iran and expanded conflict in the South Caucasus would not serve Russia’s interests, particularly as the threat of an Azerbaijani offensive to secure the so-called Zangezur corridor remains. Since Iran is the only regional power unequivocally backing Armenia’s territorial integrity, its weakening could pose serious challenges for Russia in an area it considers part of its sphere of influence.
At the same time, an emboldened Azerbaijan—with Turkish backing—could open the door for NATO expansion in the Caucasus, a direct threat to Russia’s regional standing.
If Tehran stabilizes after the escalation, it may push ahead with nuclear weapons development, potentially sparking a regional arms race. This would not serve Russia, as it could destabilize the region and drive Gulf states closer to Washington for security guarantees—undermining Moscow’s long-term goal of reducing U.S. influence in the Middle East.
Turning to China
With Russia distracted and unreliable, reports in Iranian and Western media suggest Tehran has turned to China in hopes of acquiring advanced weapons, particularly the Chengdu J-10C multirole fighter. But China’s hesitation is clear. As Andrea Ghiselli of the University of Exeter noted, Beijing seeks to stabilize ties with Washington to buy time for economic and technological self-sufficiency, a priority that outweighs rebuilding Iran’s air force.
China also values its relations with Iran’s regional rivals in the Gulf, especially Qatar, Saudi Arabia, and the UAE, who supply vital energy and trade partnerships. For Beijing, continued oil purchases from Iran—providing Tehran critical revenue under sanctions—are a more effective and less risky way of supporting Iran than selling advanced weapons.
Economics: The Only Viable Path
Economic cooperation remains the most sustainable aspect of bilateral ties. Sanctions-hit Iran has survived thanks to trade with Russia, China, Iraq, the UAE, and Turkey. In 2024, Iran-Russia trade rose 16% year-on-year to $4.8 billion, making Russia Tehran’s fifth-largest trade partner.
Still, Iran will never occupy the vital economic role that Turkey or the UAE play for Russia. Its modest trade volume, underdeveloped economy, and isolation prevent it from becoming a major partner.
Ultimately, Iranian-Russian cooperation serves broader geopolitical aims: challenging Western dominance, mitigating sanctions, and reducing reliance on Western-controlled financial institutions. Their coordination extends beyond energy to geopolitical influence, alternative trade routes, and investment frameworks, using platforms such as the Shanghai Cooperation Organization, the Eurasian Economic Union, and BRICS to push back against the U.S.-led order.
Conclusions
- Russian-Iranian cooperation will likely continue, but Tehran’s capacity and willingness to support Moscow are diminishing. Meanwhile, Russia—deeply engaged in Ukraine—has limited resources to assist Iran. Publicly, relations will appear steady, but behind the scenes, Iranian trust in Russia has eroded, weakening the partnership.
- China is not a substitute for Russia in military terms. Beijing’s caution stems from its Gulf ties and reluctance to provoke Israel and the U.S. Even if Iran secures Chinese fighter jets, it lacks the resources to sustain air superiority in future conflicts.
- The latest escalation against Iran, and the limited support it received from its supposed allies, exposed the fragility of the anti-Western bloc and its immaturity in confronting the U.S. and its partners.
- Iran’s options for political and military backing have narrowed further, and it will take years to recover what it has lost.
