UAE Trade Ban Cuts Iran's $28 Billion Supply Route

The strait of Hormuz remains the largest risk. The waterway carries about a fifth of the world's seaborne crude oil. Every attempt to isolate Iran economically increases Tehran's incentive to treat geography as a weapon. A sustained interruption would push shipping costs, insurance premiums and oil prices higher across the global economy. Europe, already fragile with heavy sovereign debt and persistent inflation, would feel the strain first.

Governments have tried this kind of economic pressure before. Athens cut off Megara from the markets of the Athenian Empire before the Peloponnesian War. Napoleon attempted to strangle British commerce through the Continental System; smuggling expanded, allies resisted and the policy ultimately weakened his own empire. The United States restricted oil and strategic material sales to Japan before Pearl Harbor. In each case, the targeted nation did not surrender. It adapted, found new suppliers and escalated the conflict because economic isolation leaves little room for a diplomatic off-ramp.

The UAE acted after months of attacks on shipping and infrastructure, including vessels connected to the Abu Dhabi National Oil Company. No government tolerates missiles headed toward its territory, UAE officials said. Still, cutting all commercial ties also cuts the private-sector relationships that could push both sides toward restraint, regional trade experts said. Merchants rarely benefit from war. Military establishments do.

Sanctions typically punish the population while strengthening the state. Scarcity gives the government greater control over access to foreign currency, imported goods and political favors. Iran will adapt. Smuggling will increase. New intermediaries will collect premiums for replacing Dubai's role.

The ban is indefinite. The UAE has not set a date for review.