The economic stakes are enormous. The International Energy Agency says the strait normally carries about 20 million barrels a day of crude and oil products, roughly a quarter of global seaborne oil trade, while nearly a fifth of global liquefied natural gas exports also depends on the route. That makes every escalation in Hormuz an Asian energy problem as much as a Gulf security problem.
China Iran war: Why Hormuz gives Beijing room to maneuver
The United States is trying to raise the price of doing business with Tehran. Washington threatened secondary sanctions on buyers of Iranian oil, including Chinese banks, as part of a broader effort to squeeze Iran’s transport network and reduce its room for maneuver. But that same policy also exposes a structural limit in U.S. pressure: China is still the external buyer that matters most.
That is because China buys more than 80% of Iran’s shipped oil, according to Kpler data cited by Reuters. If Chinese refiners pull back, Tehran feels it quickly. If Chinese demand holds, Iran keeps a financial lifeline. In practical terms, Beijing gains leverage either way, because U.S. coercion works only up to the point that China cooperates.
Beijing is also positioning itself as the defender of commercial stability. Publicly, China has called a blockade of the Strait of Hormuz contrary to international interests and urged restraint. That language is more than routine diplomacy. It allows Beijing to speak at once to Gulf exporters, Asian importers and Iran itself, while presenting Washington as the power willing to accept wider market disruption to tighten the squeeze on Tehran.
This leverage did not appear overnight
China’s current position rests on years of incremental regional positioning. In 2023, Beijing brokered the Saudi-Iran agreement to restore diplomatic ties, a moment that signaled it wanted influence in Gulf diplomacy as well as Gulf energy. Even earlier, China and Iran signed a 25-year cooperation agreement in 2021, giving their relationship a longer strategic frame than day-to-day oil trading alone.
Those earlier milestones matter now because they help explain why Beijing can still talk to all sides without looking like a complete outsider. China has commercial exposure, diplomatic access and a record of staying engaged even under U.S. sanctions pressure. That combination makes it more relevant in a Hormuz crisis than it would have been a decade ago.
Beijing’s advantage still comes with limits
China’s leverage is not the same as control. A prolonged Hormuz disruption would still hurt Chinese refiners, raise freight and insurance costs and threaten broader Asian growth. Beijing also has to balance the appeal of discounted Iranian barrels against the danger of harsher U.S. financial pressure on the banks, traders and shipping networks that keep that trade moving.
Still, the crisis is exposing a paradox in U.S. strategy. The harder Washington presses Tehran at sea and in energy markets, the more valuable China becomes both as Iran’s principal oil outlet and as a potential intermediary with a direct interest in reopening trade flows. Beijing does not need to win the conflict to benefit from it. It only needs to remain indispensable to the next round of decisions.
