As if this were not enough, China is playing a counterproductive role. Beijing’s security relationship with Russia has deepened: Russia has provided critical weapons and defense-industrial expertise to China, and the two countries are engaging in more frequent and sophisticated joint military exercises. Beijing, in effect, has sanctioned a larger Russian military role in Asia and provided the political cover and economic lifeline Putin needs to continue fighting in Ukraine. China has also shielded North Korea from international sanctions and pressure designed to force Kim to give up his nuclear weapons program. There is historical precedent for the three countries’ working together, too. During the Cold War, China, North Korea, and Russia were all committed to “opposing imperialism”—code for their anti-Western activities. Their cooperation facilitated conflict around the world, including in eastern Europe, on the Korean Peninsula, and across the Taiwan Strait.
The good news, however, is that this trilateral alignment turned out poorly for all three countries during the Cold War—and if the United States plays its cards right, it can fail this time around, too. Chinese and Soviet backing helped North Korea fight South Korea and its allies to a draw, leading to an armistice agreement in 1953, but subsequent decades of poverty and international pariah status can hardly be considered a victory for Pyongyang. As for Beijing and Moscow, cooperation soon gave way to the Sino-Soviet split and the eventual collapse of the Soviet Union. Although today’s circumstances are different, familiar signs of unease are already visible among China, North Korea, and Russia—rifts the United States can exploit.
An Unstable Triangle
China, North Korea, and the Soviet Union’s falling out over the course of the 1950s is instructive. The decade began with the two larger powers, China and the Soviet Union, committed to each other’s security and to supporting other communist countries, including North Korea. In 1950, Beijing and Moscow signed an alliance agreement vowing mutual defense in the event of an attack and pledging to coordinate their activities against the West. Both supported Kim Il Sung, the founding father of North Korea and the grandfather of Kim Jong Un, in his bid to attack South Korea the same year. When China sent its own forces into the brutal fighting on the Korean Peninsula, the Soviet Union backed the Chinese effort with military aid and expertise.
But this cooperation was not to last. After the death of the Soviet leader Joseph Stalin in 1953, his successor, Nikita Khrushchev, introduced political reforms and pursued “peaceful coexistence” with the United States. The Soviet Union’s pivot threatened to undermine the Chinese leader Mao Zedong’s domestic project, which emulated Stalin’s harsh governance. Meanwhile, Chinese attacks on Taiwanese-controlled islands, China’s 1962 border war with India, and the Great Leap Forward—Beijing’s disastrous economic and social program of that period—elicited contempt in Moscow. Mao’s personal jabs at the Soviet leadership did not help matters, either. By 1960, the Soviet Union had canceled 12 aid agreements and roughly 200 science and technology projects in China.
Back then, as now, Beijing and Moscow were revisionist great powers with limited willingness to advance the other’s ambitions. Both expected more from a partnership than mere protection. Beijing sought financial assistance for its defense-industrial base and political support to lend legitimacy to the regime. Moscow wanted to lead an ever-expanding communist bloc and to secure China’s help in undermining the United States’ position in Asia. Although the two sides shared many of the same interests, their priorities differed. And they would clash over tactics, especially when it came to dealing with third parties. Beijing and Moscow disagreed, for instance, about how to respond to Polish and Hungarian resistance against Soviet control in 1956: Mao even warned that China would support Poland if the Soviet Union dispatched troops to quell the unrest.
Chinese and Soviet leaders weighed the benefits and risks of teaming up. Great powers can use alliances to strengthen their militaries and enhance their deterrence, but forming a partnership can also provoke a potential adversary or draw one of the great powers, against its wishes, into its ally’s disputes. During the 1950s, for example, Soviet leaders grew concerned that China’s dispute with Taiwan would undermine their plans to discuss détente with the United States.
Similar stresses could now be opening fissures between China and its partners. Closer cooperation between North Korea and Russia has highlighted a fundamental tension in Russia’s relationship with China: unlike Pyongyang, Beijing has been unwilling to aid Moscow’s war effort directly. Russia’s requests for military equipment and aid from China have gone unanswered. (Russian officials have claimed that China secretly agreed to provide lethal weapons, but U.S. assessments have found no evidence that this is true.) Beijing’s official stance on the war in Ukraine is to remain neutral. It has called for de-escalation, reiterated its opposition to the use of nuclear weapons, and affirmed the sovereignty of all nations. None of China’s statements have contained explicit rebukes of Russia, but they have not expressed full-throated support, either. The fact that Russia had to turn to North Korea for aid shows how little material assistance Moscow is receiving from Beijing. In the immediate term, Russia has no choice but to take what help it can get, but eventually the discovery that its “no limits” partnership with China does, in fact, have limits may force a reckoning with the risks of relying on Beijing.
For China’s part, the North Korean–Russian relationship undermines Beijing’s influence on the Korean Peninsula. With no indication of having consulted China, Russia opted to ignore United Nations trade sanctions (which both China and Russia had signed on to) and sell North Korea the advanced military technology its leaders have long desired. Now that Russia is willing to provide benefits that China will not, Pyongyang is turning closer to Moscow, and Beijing has lost significant leverage. To be sure, China is still North Korea’s largest trading partner. And even when North Korea was almost wholly dependent on China, Kim sometimes felt free to dismiss Chinese leaders’ preferences. But Russian support gives Pyongyang a stronger hand to take action that could impede Beijing’s regional and global ambitions. For example, Beijing will not want North Korea—or Russia, for that matter—to jeopardize its attempts to unify Taiwan with mainland China. But a crisis on the Korean Peninsula could spoil China’s plans by driving the United States and its allies toward deeper defense integration, just as the North’s 1950 invasion of the South pushed the United States to rethink its security interests in the region and sign a defense pact with Taiwan in 1954.