Russia and China, Iran's most powerful diplomatic partners, have labeled the US-Israeli military action against Iran a clear violation of international law. President Vladimir Putin called the assassination of Supreme Leader Ali Khamenei a "cynical violation of all norms of human morals," while China's Foreign Minister Wang Yi urged all sides to avoid further escalation, stating that "force cannot truly solve problems." Both nations jointly requested an emergency UN Security Council meeting, reflecting their coordinated diplomatic front against what they describe as a US-led international order.
Yet, despite this sharp rhetoric, neither Moscow nor Beijing has indicated a willingness to intervene militarily on Iran's behalf. This strategic distance highlights the practical limits of their partnerships, even as they project unity through joint naval drills and bilateral agreements.
Russia and Iran: A Partnership Without Mutual Defense
In January 2025, Russia and Iran signed a comprehensive strategic partnership treaty covering trade, military cooperation, science, culture, and education. The agreement deepened defense and intelligence coordination and supported infrastructure projects like transport corridors linking Russia to the Gulf through Iran. As recently as late February, the pair conducted joint military drills in the Indian Ocean, just a week before the US and Israel attacked Iran.
However, the treaty did not include a mutual defense clause, meaning Russia is not obligated to respond militarily. Andrey Kortunov, a former director general of the Russian International Affairs Council, noted that Russia's 2024 treaty with North Korea is a "more binding" agreement that requires military support in conflicts. In contrast, the Iran treaty only commits both sides to abstain from hostile actions if the other is engaged in conflict.
Kortunov explained that Russia is unlikely to take direct military action because the risks are too high. Moscow appears to be prioritizing US mediation in the Ukraine conflict and has taken a similar cautious approach in other situations, such as criticizing US actions in Venezuela without intervening. Some contacts in Tehran have expressed frustration, expecting more than just diplomatic moves at the UN, but the treaty's limits are clear.
China's Pragmatic and Limited Role
In 2021, China and Iran signed a 25-year cooperation agreement aimed at expanding ties in energy and integrating Iran into China's Belt and Road Initiative. Jodie Wen, a postdoctoral fellow at Tsinghua University, described the relationship as pragmatic and stable, with regular political exchanges and deep economic cooperation, including significant Chinese investments in Iran.
Yet, Beijing has long drawn clear limits around military involvement. Wen stressed that China adheres to non-interference in other countries' issues and is unlikely to send weapons to Iran. Instead, Beijing's role focuses on diplomacy and crisis management, such as talking with the US and Gulf countries to de-escalate tensions. This clarity has helped build trust in Tehran, even though the relationship is not symmetrical.
Vessel-tracking data shows that 87.2% of Iran's annual crude oil exports go to China, underscoring China's economic significance for Tehran. However, Iran remains a relatively small partner in China's global trade. Dylan Loh, an associate professor at Nanyang Technological University, suggested that China's role has evolved into a protective one, accelerating mediation efforts to prevent regional collapse that could threaten its own economic and security interests. This reassessment began after the US attack on Venezuela, indicating a pattern of cautious strategic calculation.
The reactions from Russia and China demonstrate a structured approach to international conflicts: strong diplomatic condemnation paired with a clear avoidance of military entanglements. For Iran, this means relying on these partners for economic and diplomatic support while facing the reality that no formal military alliance exists. The situation underscores a broader trend in global politics where strategic partnerships are carefully calibrated to avoid direct confrontation, prioritizing national interests over ideological solidarity.
