What this actor is
China is the demand side of this system. It is reported as taking around ninety per cent of Iran's oil exports, which is the practical ceiling on what sanctions can achieve, and it is a major buyer of Gulf Arab crude and Qatari LNG at the same time — roughly a quarter of Qatari LNG exports were destined for China in 2025. It is also a decision-maker on the diplomacy: on 7 April 2026 China and Russia vetoed a Security Council draft on safeguarding international shipping through the Strait of Hormuz, having voted for the earlier resolution condemning attacks on the Gulf states. China buys from both sides of the war and holds a veto over the Council's response to it.
Confidence: Moderate Reviewed 2026-09-04
The buyer on both sides
China is simultaneously Iran's principal customer and a major customer of the Gulf Arab states whose exports Iran has disrupted. That dual position is the reason its diplomatic behaviour has not tracked either camp: it did not block the condemnation of attacks on the Gulf states in March, and it blocked the shipping resolution in April on the stated grounds that the draft failed to capture root causes and offered one-sided condemnation.
What is established and what is not
China's role as a customer is well documented. Claims that China has provided Iran with navigation, radar or electronic-warfare support are reported by commentary attributing them to unnamed experts, and no primary confirmation has been found. Vigil does not author that support, and the security relationship will carry an explicit information gap when it is written in P2.
Not published for China and the GulfPosture (objectives, constraints, leverage)
Elsewhere in Iran–Gulf
Last reviewed — 2026-09-04