Donald Trump and Xi Jinping met in Busan, South Korea, on 30 October, producing the most significant easing of the US-China trade confrontation since Trump’s return to office. The two governments have agreed to step back from several measures that had threatened to push the world’s two largest economies towards a much deeper economic separation. Washington will reduce some tariffs imposed on Chinese goods, including cutting the additional tariff connected to fentanyl-related concerns from 20% to 10%, while Beijing has agreed to suspend recently announced restrictions on exports of important rare-earth materials for one year, resume significant purchases of American agricultural products including soybeans and strengthen cooperation against flows of fentanyl precursor chemicals. Trump described the meeting in extremely positive terms, while China presented the outcome more cautiously as evidence that dialogue can stabilise relations. The agreement does not resolve the deeper rivalry over semiconductors, Taiwan, industrial subsidies, military power or technological leadership, and many tariffs remain in place. What it does demonstrate is something increasingly clear about the relationship: America and China are trying to reduce dependence on one another while repeatedly discovering that complete economic separation would impose costs neither government currently wants to bear.
Rare earths demonstrate the problem better than almost any other commodity. China dominates substantial portions of global rare-earth mining and, more importantly, processing capacity. These materials are used in electric vehicles, electronics, wind turbines, advanced manufacturing and military equipment. Beijing’s willingness to restrict exports therefore gives it a form of supply-chain leverage over countries possessing much larger economies in aggregate. The United States can impose tariffs on hundreds of billions of dollars of Chinese goods, but if American manufacturers cannot obtain a relatively small quantity of one specialised processed mineral, production of a much more valuable final product can be disrupted. Strategic importance therefore is not proportional to the dollar value of trade. It depends on whether a particular input has substitutes and how quickly those substitutes can be produced.
This is why Trump’s tariff strategy and China’s rare-earth strategy are mirror images of the same principle: interdependence becomes power when one side controls something the other cannot replace quickly. America controls access to an enormous consumer market, advanced semiconductor technologies and much of the global financial architecture. China possesses manufacturing scale, processing capacity and increasingly sophisticated technological capabilities. Both governments have spent the past several years identifying where the other side depends on them and attempting to weaponise those dependencies selectively. The result is not ordinary free trade, but neither is it complete decoupling. It is a much more political form of economic integration in which governments continuously calculate which dependencies are commercially useful and which have become strategically dangerous.
The one-year suspension of China’s rare-earth restrictions is therefore not a solution to American vulnerability. It is time purchased through negotiation. Washington now has an even stronger incentive to use that year to diversify supply. Mines need investment, processing facilities need construction and companies need long-term purchasing contracts making alternative production commercially viable. Australia, Canada and other countries possess relevant mineral resources, while the United States itself has deposits that can be developed further. But replacing Chinese processing capacity cannot happen simply because a president signs an executive order. Industrial ecosystems are accumulated through years of investment, technical knowledge and scale. If America reaches November 2026 with essentially the same dependence it possesses today, the negotiating leverage will simply return to Beijing.
Soybeans reveal the other side of the relationship. China is an enormous market for American agriculture, meaning Chinese purchasing decisions affect farmers across the US Midwest. Beijing has historically understood that agricultural retaliation possesses political as well as economic value because farming communities are concentrated geographically and can influence congressional and presidential politics. Reducing purchases therefore creates pressure inside America rather than merely lowering Chinese imports. Resuming purchases now gives Trump a visible domestic benefit from the agreement. Chinese consumers and agricultural processors receive supplies they can use, American farmers regain demand and both governments can describe the transaction as evidence that negotiation produced gains.
This is one reason trade wars rarely remain purely economic. Governments choose tariffs according to political geography. China targets agricultural constituencies. America targets strategic manufacturing. Europe selects American products associated with politically important states when retaliating. Economic coercion therefore becomes an attempt to transmit foreign pressure through another country’s domestic political system. The target government is not always the final audience; voters, businesses and industries are.
The fentanyl component shows how extensively Trump is using tariffs beyond conventional trade policy. The administration originally justified an additional 20% tariff partly through allegations that Chinese chemical suppliers contributed to the production of fentanyl entering the United States through criminal networks. China has now agreed to strengthen measures against precursor chemicals, and Trump has reduced that tariff to 10%. This is effectively conditional economic coercion: a tariff is imposed to change non-trade behaviour and partially removed when behaviour changes. Whether the arrangement works should therefore be measured through actual reductions in illicit precursor flows rather than through the tariff rate itself.
This is a potentially powerful model because the American market gives Washington leverage over issues ordinary diplomacy struggles to influence. But it also creates a credibility problem for trade agreements. If tariffs can be imposed over narcotics, national security, migration or other disputes, foreign governments and companies cannot assume that resolving conventional trade barriers guarantees stable market access. The more versatile tariffs become as geopolitical weapons, the less predictable they become as economic rules. Coercive flexibility for governments creates investment uncertainty for firms.
The semiconductor conflict remains much harder because it concerns the future distribution of technological power. The United States has restricted China’s access to some advanced chips and manufacturing equipment because artificial intelligence and high-end computing possess both commercial and military applications. China sees these restrictions not simply as national-security precautions but as an attempt to prevent Chinese technological advancement. Unlike soybean purchases, this disagreement cannot be resolved easily by agreeing to buy more of something. Both countries believe leadership in advanced computing will affect economic and military power for decades.
This means the relationship is developing into selective interdependence. Agricultural trade can expand. Consumer goods can continue crossing the Pacific. Tourism and some investment can recover. Meanwhile, advanced semiconductors, artificial intelligence, quantum technology, telecommunications and critical minerals remain increasingly securitised. The global economy therefore is not splitting neatly into two separate systems. It is developing strategic fences around particular technologies while much of ordinary commerce continues underneath them.
For India, this creates both opportunity and risk. Companies seeking to reduce excessive dependence on Chinese manufacturing are looking for alternative production locations, and India’s scale makes it one of the few countries capable eventually of absorbing substantial portions of complex supply chains. Yet a US-China truce reminds New Delhi that “China plus one” does not mean “China disappears”. Chinese manufacturing remains extraordinarily competitive, supported by infrastructure, supplier networks and industrial scale that India cannot reproduce immediately. India therefore needs to compete through logistics, skills, regulatory stability and manufacturing productivity rather than assuming geopolitical tension will automatically redirect factories towards it.
The truce also demonstrates why India’s multi-alignment strategy remains useful. Washington and Beijing can move from confrontation towards negotiation quickly when their interests require it. A country organising its entire foreign policy around the assumption that two great powers will remain permanent enemies therefore takes unnecessary risk. India has strong reasons to balance Chinese strategic power, particularly because of the unresolved border dispute, while retaining economic engagement where beneficial. Strategic competition does not require economic irrationality.
Trump’s meeting with Xi should therefore be understood less as reconciliation than as risk management between competing powers. Neither government has abandoned its long-term objectives. America still wants to reduce strategic dependence on China and protect technological advantages. China still wants greater technological self-sufficiency and a larger role in shaping international institutions. Taiwan remains unresolved, military competition continues across the Indo-Pacific and both governments are expanding domestic industrial policy. What changed in Busan is that both leaders recognised an uncontrolled trade escalation would damage their own economies before necessarily forcing the other side to surrender.
That is an important form of deterrence in itself. Economic interdependence creates vulnerabilities, but those vulnerabilities can restrain conflict when disruption becomes mutually expensive. The old liberal argument that trade automatically produces peace was too optimistic; Russia and Europe traded extensively before the invasion of Ukraine. But the opposite claim that interdependence provides no stabilising effect is also wrong. Trade raises the opportunity cost of conflict even when it cannot eliminate the political reasons for conflict.
The one-year duration of the agreement captures the current relationship perfectly. Neither side trusts the other enough for a permanent settlement. Both trust their own economic interests enough for a temporary one. That may become the normal condition of US-China relations: repeated truces, targeted confrontation and constant renegotiation rather than either a return to the free-trade optimism of the 2000s or a complete new Cold War.
The success of this agreement should therefore be judged over the next year through measurable outcomes. Do Chinese rare-earth exports remain reliable? Do American agricultural purchases recover? Does fentanyl precursor enforcement improve? Does Washington use the breathing space to diversify critical supply chains? Do both countries avoid another uncontrolled tariff escalation? If so, the Busan summit will have created something valuable even without resolving the larger rivalry.
The deeper lesson is that neither Trump nor Xi has discovered a way to escape economic interdependence entirely. Each has instead discovered how much leverage interdependence provides and how expensive using that leverage can become. The emerging US-China relationship is therefore not based on trust, and it is not based on separation. It is based on both sides understanding that they can hurt one another economically, but that doing so without limits eventually hurts themselves as well.
