Putin and Xi Jinping on background of contain port

China does not want to see Russia being defeated on the battlefield in Ukraine. This is what Chinese Foreign Minister Wang Yi told the EU’s top diplomat Kaja Kallas when he visited Brussels in early July. Since the outbreak of the full-scale invasion in February 2022, Beijing has provided economic, military and diplomatic support to the Kremlin, although to different degrees.

China and Russia share deep ideological and geopolitical interests that bind them together. Both governments view US influence and the spread of liberal democracy as direct challenges to their political models and regional if not global ambitions. Their partnership is therefore not just pragmatic, but also strategic: by aligning with Moscow, Beijing reinforces a broader effort to reshape the international order in ways that curb Western dominance. These converging interests explain why China has been willing to extend significant support to the Kremlin, even as it carefully manages the risks involved.

As demonstrated throughout this data story, China’s support is not limitless. Beijing has avoided paying a high economic and political price for its help: Moscow has become progressively more dependent. In turn, China has leveraged the asymmetry in the relationship, by using Russia as a market to absorb its exports. How has Beijing helped Russia and where are the limits of such support? How has China reacted to Western sanctions? And what scope does this leave for Europe to leverage its influence to ‘unpower Russia’ – as discussed in a recently published EUISS Chaillot Paper?

The following graphs provide answers that reveal some surprising results: despite strong geopolitical and ideological ties that are unlikely to be undone, Beijing and Moscow’s political alignment masks important economic limits. Diplomatic signalling and security cooperation remain valuable tools, but they do not override Beijing’s sensitivity to costs—China adjusts its behaviour when support would entail substantial economic pain. We see this in several metrics, but most clearly in the decline of dual-use exports when forceful secondary sanctions are put in place. Far from being anomalies, these patterns reflect structural asymmetries that constrain how far the relationship can withstand external pressure. For European policymakers, the implication is clear: the goal should not be to sever Russia–China security ties, but to shape their economic calculus. Read on to see how targeted costs could shift the balance.

Growing Chinese exports to Russia

Since Russia’s full-scale invasion of Ukraine, China has become economically indispensable to Moscow. This holds for both imports and exports. Let’s first look at China’s exports to Russia: 

China’s imports from Russia: commodities dominate

Chinese imports from Russia followed a similar trajectory, rising by 13% after the full-scale invasion of Ukraine in 2022.

China’s growing mineral fuel imports have centred primarily on oil, with Russia’s share rising steadily over the past decade.

Still, China maintains a medium-high level of diversification, suggesting that its oil trade with Russia does not yet create significant dependency. Nonetheless, Beijing is likely to continue its decade-old strategy of diversifying its energy sources.

Unlike oil, which is relatively easy to transport, gas largely relies on pipelines, helping to explain why China’s energy imports from Russia are primarily focused on oil. But there is more to China’s trade strategy than mere practical considerations: for years, Beijing hesitated to agree to building a new gas pipeline, the Power of Siberia 2. Only recently, on the sidelines of the Shanghai Cooperation Organisation summit in Tianjin, Russia and China concluded a Memorandum of Understanding for the construction of the pipeline. Although the deal marks progress for the Kremlin, it remains unfinished. A clear timeline has yet to be set, and no final pricing agreement is in place. While both sides agreed to almost triple gas trade (to 106 billion m3/year), part of this increase could be achieved by expanding the capacity of existing pipelines. This indicates that, for China, trade with Russia serves as a form of political signalling, while still taking its own economic needs into account. Moreover, higher imports of coal and gas from Russia have advanced Beijing’s diversification strategy, with the HHI falling in both cases.

Growing asymmetrical dependencies

Despite consistent growth in both imports and exports in recent years, the Russia–China economic relationship remains deeply asymmetrical. Russia is becoming increasingly reliant on China across a widening range of product categories, while Beijing maintains minimal exposure to Russian inputs.

A comparison of trade shares across major sectors underscores this imbalance.

This indicates that while Russia has become increasingly dependent on Chinese inputs due to growing imports, China’s dependency on the Russian sales markets has only marginally increased.

An analysis of Russian imports across key product categories (at the 4-digit HS level) further highlights significant dependencies on China. A product category is considered ‘dependent’ if more than 30% of imports originate from China and if total imports are at least twice the value of exports – indicating limited domestic production capacity.

Applied in reverse, the asymmetry becomes even more apparent: China depends on Russia for less than 0.1% of its product categories.

Russia’s exports to China show a similar picture of asymmetrical dependencies: even in mineral fuels – Russia’s most strategic export – the asymmetry holds.

The result is a pronounced dependency gap that translates into asymmetric strategic flexibility. Beijing retains the hypothetical option to dial back cooperation if the political or economic costs rise. Moscow, by contrast, has no such leverage: its reliance on Chinese goods renders it vulnerable to any shift in Beijing’s calculus. In short, while China can afford to recalibrate, Russia is locked in unless Western sanctions are removed. This imbalance constrains Russia’s room for manoeuvre. Should Europe be successful in pressuring China to curtail its support for Russia, the consequences for the Kremlin would be profound.

Military ties

On the military front, China and Russia maintain long-standing defence ties. Since 2005, the two countries have carried out significant joint military exercises that have expanded in scale, while continuing to trade military equipment.

The overall reduction in both quantity and complexity of arms imports – combined with the fact that remaining purchases are limited to areas where China still lacks critical technical know-how – underscores Beijing’s drive for greater self-sufficiency in military technology. This trend further reinforces the structural asymmetry in the relationship, with China progressively shedding its reliance on Russian military inputs.

Dual-use goods

Dual-use goods — civilian items with potential military applications, such as precision machinery, electronics, and navigation equipment — have become a central channel of China’s indirect military support to Russia.

China is far from being self-sufficient in many categories of dual-use items. It relies on imports from Europe for several of such goods.

According to EUISS calculations based on China customs statistics, in 2024, for more than one-third of dual-use product categories, the EU accounted for at least 30 % of China’s imports — worth over USD 57 billion.

For certain items, such as radionavigation systems and telescopic sights, over half of China’s imports originate from the EU. This creates an often overlooked structural dependency: Beijing’s capacity to export such goods — including to Russia — partly depends on uninterrupted EU supply.

 

Another indicator that a sizeable portion of China’s dual-use exports to Russia may be transhipments of European goods is the share of export volume to Russia relative to China’s imports of the same products from the EU. Where China relies extensively on EU supply for a particular product, there is a high likelihood that a significant portion of those EU-origin items is diverted from China to Russia.

Analysis shows that for several categories, the share of China’s exports to Russia compared to its EU imports shifted sharply after 2022 — in some cases exceeding pre-war levels by a wide margin.

This pattern confirms that EU-origin goods entering China can indirectly reach Russia through re-export, especially in high-dependency categories. According to a classified paper from the German Federal Foreign Office seen by German media, the EU Sanctions Envoy David O’Sullivan estimates that China (including Hong Kong) accounts for around 80% of the circumvention of EU export controls of dual-use items.

However, also in this case, China's support to Russia is responsive to external pressure.

The likely reason is that the sanctions adopted in December 2023 were much more forceful than previous sanctions packages adopted in February 2022 and February 2023, when Chinese exports of dual-use items to Russia quickly rebounded after an initial decline.

These dynamics carry clear strategic implications for the EU. In key dual-use categories, Brussels holds more potential leverage over Beijing than is widely assumed: restrictions on EU exports could compel China to prioritise its own domestic needs, indirectly limiting Russia’s access to critical goods. Evidence from US measures issued in December 2023, demonstrates that targeted, well-calibrated sanctions can alter Chinese export behaviour, even in sectors with direct military relevance. A more coordinated EU approach – using China’s dependencies to apply pressure through precisely targeted export controls and secondary sanctions – could significantly disrupt Moscow’s access to these critical dual-use goods.

 

European sanctions and export controls have faced implementation challenges: a more coordinated approach, particularly one leveraging Chinese dependencies through targeted secondary sanctions, could prove significantly more effective. Evidence suggests that Beijing is responsive to external economic pressures. It remains to be seen whether and how China would adjust its support for the Kremlin if well-calibrated measures were to target Chinese economic interests. Clearly, China’s support for Russia is mainly driven by political and geopolitical considerations. But the data indicates that despite such political interests Beijing remains responsive to sanctions when they affect its economic interests.

Diplomatic alignment

China and Russia are often believed to maintain a shared narrative. Both promote a vision of a multipolar order in opposition to the Western-led system. However, this rhetorical alignment masks a less consistent reality in diplomatic practice, particularly within international institutions like the United Nations.

Unlike in trade patterns, both instances of Russian aggression against Ukraine in 2014 (Crimea, Donbass) and 2022 (the full-scale invasion) were followed by a decline in the diplomatic alignment of China and Russia. This indicates the limits of Chinese support and a transactional element in Beijing’s policy. Every dimension of its relationship with Russia is calibrated to maximise strategic and economic gains. In the economic sphere, the war in Ukraine offers China clear advantages. At the UN, however, Beijing seems to be more careful and concerned with projecting an image of itself as a responsible global actor, making full alignment with Russia more difficult.

Conclusions

The China-Russia relationship is solid but not immutable. China has become Russia’s primary economic lifeline. At the same time, China’s dependency on Russia has not increased, thus shaping a highly asymmetrical dynamic. China and Russia are linked by deep ideological and geopolitical interests. Both governments regard US influence and the global spread of liberal democracy as direct challenges to their political models and regional objectives. Their partnership is therefore more than pragmatic; it is strategic. Beijing’s alignment with Moscow advances a broader project to revise the international order and reduce Western pre-eminence. These convergent interests account for China’s willingness to extend significant support to the Kremlin.

Crucially, ideological alignment does not guarantee parallel economic interests. Amid a more competitive environment, political signalling and diplomatic alignment retain strategic value for both; however, economic pressures persist and are addressed in ways that minimise disruption to their public alignment. Our data shows that Beijing does react to external pressure. Its main motivation may be geopolitical, but – as we demonstrate above – it limits its support if this comes at significant economic cost. This sensitivity is often underestimated: the drop in dual-use exports after secondary sanctions, Russia’s retaliatory tariffs on Chinese vehicles, or the slowing alignment at the UN indicate the limits of a friendship that both sides have described as ‘unlimited’. These are not anomalies; they are signs of a relationship that is responsive to pressure and shaped by asymmetries.

This is not to deny the close partnership: China fuels Russia’s war effort, but it does so when the price is low and the payoff high. The EU, as a major trading partner, has tools to raise that price, including by constraining the supply of dual-use items via secondary measures. To this day, the EU has not fully leveraged this potential. It remains to be seen whether Beijing would prioritise its political interest over the economic cost of more severe sanctions; however, the evidence since 2022 indicates that pressure has already curbed elements of China’s support. The rational objective for Europe is not to ‘split’ Beijing and Moscow – their security and diplomatic ties are too binding – but to force a shift in their economic relationship by imposing costs on China. With that purpose in mind, the observable metrics for the EU should be on trade and financial flows, such as export of dual-use goods and critical items, rather than the cadence of high-level statements.

This analysis highlights three core takeaways:

  1. The China–Russia relationship is strategic, but responsive – its strength should not be mistaken for inevitability. Despite talk of an ‘unlimited friendship’ as outlined in 2022, China’s behaviour in the partnership is not purely driven by ideological considerations but has pragmatic elements. It remains sensitive to shifts in external pressure.
  2. Their relationship is becoming increasingly asymmetrical – Russia is growing more dependent on China. This imbalance grants Beijing strategic flexibility, while leaving Moscow tethered to Chinese supply lines, even though Beijing is not Russia’s only supplier. Hence, a decline in Chinese support would hurt the Kremlin significantly.
  3. The EU holds more meaningful leverage than is widely assumed and this should be more fully utilised, especially in the form of secondary sanctions.

The good news is that Beijing’s behaviour towards the Kremlin depends more on the price we make China pay than we might think. It is unrealistic to assume we could dismantle the China–Russia relationship. China has a strong geopolitical and ideological interest in supporting Russia. But increasing the price for Beijing could make it reduce its support. This, in turn, would have enormous consequences for Moscow, which is increasingly dependent on China.

To dive deeper into this topic, consult also the EUISS’s recently published Chaillot Paper ‘Unpowering Russia’.