How Trade Became a Weapon

For most of the post-Cold War period, the global trading system was treated as a neutral substrate — something governments managed, regulated, and occasionally argued about, but rarely tried to break. That assumption has unwound surprisingly fast. Tariffs, sanctions packages, export controls on advanced technology, and quiet pressure on the chokepoints of finance and shipping are now standard tools of statecraft, used by allies and adversaries alike.

The shift has consequences that travel far beyond the headline measures. Supply chains rebuild around political risk. Companies start reading foreign-policy news as if it were a credit memo. Smaller economies hedge between blocs that increasingly demand exclusivity.

In this episode, Simon traces how the world got here, which levers are doing the most work, and where the weaponization of trade is still escalating.

The shift from neutral to strategic

For three decades the working assumption in trade policy was that economic integration was politically stabilizing — that countries doing business together were less likely to come into conflict. That assumption never fully held, but it shaped institutions, corporate decisions, and individual careers in ways that are still unwinding.

The shift began with selective sanctions in the 2000s, accelerated through the 2010s with technology export controls aimed at strategic competitors, and broke into the open in the 2020s with explicit tariff regimes designed to coerce political behavior. What was once a neutral substrate is now a contested theater.

The institutions that grew up around the older assumption — the WTO dispute system, the consensus protocols of the OECD, the technical cooperation frameworks of the Bank for International Settlements — were not designed for an environment where major economies routinely use commercial tools to advance political objectives. Those institutions still function, but they no longer sit at the center of how trade decisions actually get made.

Tariffs versus the quieter instruments

Tariffs are the headline. They are easy to understand, politically satisfying, and generate immediate retaliation that produces clear winners and losers. They also do less of the actual work than the public conversation implies.

The instruments that move the needle are the ones that operate without daily news coverage. Export controls on specific technologies — semiconductors, AI hardware, advanced manufacturing equipment — operate quietly and have longer-lasting effects because they constrain not just current trade but future capability. A country that loses access to leading-edge chip equipment for five years does not catch up by importing ordinary goods.

Investment screening regimes, sanctioned-entity lists, and licensing requirements for cross-border data flows operate in a similar register. They produce no public confrontations and accumulate quietly over time.

Financial sanctions and the dollar system

The financial sanctions architecture is the single most powerful instrument in the modern toolkit. Because most international transactions clear through dollar-denominated correspondent banking relationships, the United States can effectively cut off any individual, firm, or state from the global financial system by adding them to a Treasury sanctions list. No other country has comparable reach.

The reach has costs. Each high-profile use accelerates investment by other countries in alternatives — central bank digital currencies, alternative messaging systems, regional clearing arrangements, settlement in commodity-backed instruments. None of these alternatives is currently a serious substitute for the dollar system, but the trajectory is clear, and the time-frame for serious alternatives has shortened.

The strategic question for US policymakers is whether each individual use of financial sanctions justifies the cumulative cost of accelerating alternatives. Most individual uses pass that test. The cumulative use across the past decade may not.

Shipping chokepoints

Shipping chokepoints are the most underappreciated category. The Strait of Hormuz, the Bab-el-Mandeb, the Panama Canal during recent drought conditions, the Black Sea during active conflict, the Taiwan Strait under various scenarios — each represents a point in the global commerce network where a relatively small actor can impose costs that scale far beyond their conventional military or economic weight.

The recent contest over Red Sea shipping demonstrated that a non-state actor can impose real costs on global commerce — billions of dollars in rerouting expenses, weeks added to delivery schedules, multiple insurance markets disrupted — without holding any conventional military capability. The combination of cheap drones, accessible missile technology, and a chokepoint location turns out to be sufficient.

The implication is that chokepoint security is no longer something that can be assumed as a public good provided by major navies. It has become an active management problem with no obvious institutional solution.

What companies are actually doing

The corporate response is more interesting than the policy debate. Large firms are running shadow supply chains — secondary supplier relationships in different jurisdictions, redundant inventory positions, internal stress tests against political risk that look like the financial stress tests banks ran after 2008. None of this shows up in trade statistics until something breaks.

The cost of that redundancy is paid in margin, and it is paid quietly. Boards have largely accepted it as the new normal. The companies that pushed back against political-risk planning during the 2010s and got caught flat-footed in the 2020s have provided enough cautionary examples that internal governance has shifted across most large firms.

The shift looks like:

• Dual-source procurement for any input deemed strategically sensitive, with active operational relationships at both sources rather than paper agreements.
• Geographic diversification of manufacturing within multi-year capital plans, not as emergency response.
• Treasury and trade-finance functions that participate in board-level decisions about market entry and exit.
• Compliance staffing levels that have roughly doubled across the past decade for firms with significant international exposure.

How smaller economies are hedging

Smaller economies are making different calculations. The countries best positioned in the current environment — Vietnam, Mexico, Poland, the Gulf states, parts of Southeast Asia — share a common strategic posture. They maintain working economic relationships across blocs, avoid public commitments to exclusivity, and use the policy space created by major-power competition to attract investment that would otherwise have gone to China or to advanced economies.

The countries that have explicitly chosen a side in the past two years have generally come out worse than the ones that have stayed structurally ambiguous. That is a real lesson, but it is also a fragile equilibrium. The major-power demand for explicit alignment is rising, and the cost of ambiguity is going up. Several mid-tier economies are now in positions where they will have to choose during the next political cycle, and the structural advantages of ambiguity will not survive that choice.

Where the escalation is still open

The escalation ladder in trade weaponry has very few defined off-ramps. Sanctions, once imposed, are difficult to unwind politically. Export controls accumulate. The technical infrastructure for financial isolation gets built once and then sits available for use again. There is no equivalent of the arms-control framework that grew up during the Cold War to manage nuclear escalation, and no obvious institutional setting in which one could be negotiated.

That is the part that should keep policy planners awake. Not any single measure, but the compound effect — and the absence of doctrines for how it ends. The tools are easier to deploy than to retire, the constituencies that benefit from them are easier to organize than the diffuse public that pays for them, and the institutional memory of what unrestricted economic warfare actually costs has faded with the people who lived through the last serious episode of it.

FAQ

Is this just a US-China issue?

No. The EU, the UK, India, and a number of mid-tier economies are all using these instruments now. China has its own tools and uses them increasingly publicly. The framing of “decoupling” understates how multipolar the actual landscape is. Most major economies are now actively shaping their commercial relationships around political objectives, and the few that are not — Japan being the clearest case — are the exception.

Will tariffs come down again?

Some will. Most will not. Tariffs imposed for strategic reasons rather than industrial protection are politically expensive to remove, and the constituencies that benefit from them are easier to organize than the diffuse consumers who pay them. The tariff increases of the past five years are likely to set a new floor rather than a temporary spike.

What does this mean for global growth?

Slower aggregate growth and higher fixed costs for redundancy. The countries best positioned are the ones that can offer reliability across blocs, not the ones that pick a side. For investors, the implication is that the geographic concentration of supply chains that drove margin expansion in the 2010s is no longer available, and the firms that can manage distributed operations efficiently will outperform.

Could the financial sanctions architecture itself be displaced?

Eventually, but not soon. The dollar system’s network effects are deep, and no current alternative — central bank digital currencies, regional clearing arrangements, commodity-backed settlement — comes close to matching it. The realistic timeline for a credible competing system is fifteen to twenty years, and even then the dollar system will continue to handle the majority of international transactions.

Sources

• WTO Trade Monitoring Reports
• Peterson Institute for International Economics
• Center for Strategic and International Studies, Economics Program
• European Council on Foreign Relations
• Bank for International Settlements working papers