Donald Trump has announced a 25% tariff on goods from any country “doing business” with Iran, the latest escalation in a campaign that is less foreign policy than it is imperial accounting. He delivered the news, as is now tradition, via social media, declaring the measure “effective immediately”, with no clarification on scope, enforcement, carve outs, or the small technicality of how you police a global economy built on intermediaries, re invoicing and plausible deniability.
The intent, however, is perfectly clear. This is not a sanction. It is a protection racket with a flag. Washington is no longer merely restricting trade with Tehran, it is attempting to tax everyone else’s trade as well. The old language of rules-based order is fading. In its place, a simpler doctrine is emerging: access to the US market is conditional, and the price is obedience.
The collateral damage could be sizeable. Iran’s main trading partners are not obscure microstates but a list that includes China, the UAE, Turkey, Iraq, the EU and India. In other words, this tariff threatens not only Tehran but also supply chains across Asia and the Middle East, and several governments that have spent years trying to keep one foot in Washington’s orbit and the other in commercial reality.
India is a case study in the new imperial arithmetic. Its trade with Iran is small, around 0.15% of total commerce, and it halted Iranian crude purchases in 2019 after US sanctions returned. Yet New Delhi’s strategic exposure is not in barrels; it is in geography. India has invested in Iran’s Chabahar port, a carefully chosen corridor to Afghanistan and Central Asia that bypasses Pakistan. A blunt 25% tariff threat puts that long-term positioning under a new question: is Chabahar still a “strategic gateway”, or merely a tariff trigger waiting to be weaponized in Washington’s next mood swing?
China, meanwhile, sits at the heart of the problem, and of Trump’s design. Beijing is Iran’s largest buyer of crude, often via the familiar theatre of relabelling and category games. A fresh 25% levy on Chinese goods would not merely irritate; it risks detonating the fragile trade truce Trump reached with Xi Jinping late last year. That is the paradox of tariff imperialism: it promises control, but it constantly creates new fronts, and new contradictions.
Hovering above all of this is an awkward domestic constraint: the US Supreme Court may rule as soon as Friday on the legality of Trump’s broader tariff regime. If the court curbs his ability to impose sweeping tariffs at speed, the Iran ultimatum becomes harder to enforce in its current form, though not necessarily less dangerous, because the instinct will remain, and alternative legal tools will be found. Empires are rarely short of paperwork.
The timing is not accidental. Iran is facing its most serious internal unrest since 1979, with protests that began as a currency and cost of living crisis and have shifted towards the regime itself. Reports suggest hundreds killed and thousands arrested as the state tries to compress public anger back into silence. Trump has publicly backed the protesters and warned Tehran against violent repression, while also hinting that Iranian leaders have reached out for talks and that a meeting is being arranged, details conveniently unspecified.
Behind the rhetoric sits the familiar two track strategy: tariffs to strangle, threats to intimidate, diplomacy to extract concessions, and military options kept on the table to ensure everyone understands who writes the calendar. A White House official has said Trump has been briefed on strike options, including against non-military targets, and is seriously considering authorizing an attack. Iran, for its part, has warned the US and Israel against intervention, and the region is already nervous about what happens when escalation meets geography, particularly the Strait of Hormuz, where energy flows, and panic pricing begin.
This is not merely about Iran. It is about the method. The United States is rebuilding an imperial toolkit: tariffs as extraterritorial punishment, trade access as leverage, resources and choke points as strategic objects, and allies as co-signers rather than partners. Venezuela was the rehearsal, oil was the prize, and the message was unmistakable. Iran is the next test case, and the tariff is the opening salvo.
The question is not whether this will disrupt global trade. It will. The more relevant question is what comes next when tariffs stop being an economic instrument and become a doctrine of rule: a world where the price of doing business is no longer set by markets, but by the empire’s chosen enemies list.