When an American F-15E Strike Eagle went down over Iran this spring, the obvious question was what shot it. A new answer is now circulating in Washington — and it points east, to China. According to NBC News, citing sources familiar with the investigation, U.S. investigators believe the jet was most likely brought down by a Chinese-made shoulder-fired missile.

The same reporting goes further: China may also have supplied Iran a long-range radar built to do the one thing stealth fighters are designed to prevent — see them coming. None of this is officially confirmed, and much of it is assessment rather than proof. But if it holds up, it reframes the story of the air war over Iran.

We covered the loss itself when it happened — the first U.S. fighter shootdown in 23 years — and what it revealed about Iran’s air-defence network. The China angle is the new and uncomfortable twist.

The missile: a Chinese MANPADS

According to the NBC report, investigators now believe the F-15E was hit by a Chinese-made man-portable air-defence system — a shoulder-fired, heat-seeking missile rather than a large fixed surface-to-air battery. That broadly fits the earlier Western analysis we cited at the time, which pointed to a MANPADS such as the 9K38 Igla; the new twist is the assessment that the weapon was a Chinese type. Both crew members ejected and survived: the pilot was recovered within hours, the weapons systems officer about two days later.

The radar: seeing the unseeable

The reporting also raises a second, arguably bigger, concern. China may have provided Iran with a YLC-8B, a long-range early-warning radar marketed as able to detect low-observable aircraft. It has been linked to a separate episode in which an F-35 was reportedly detected and damaged. Here the caveats pile up quickly: the United States has never confirmed the loss or damage of an F-35 over Iran, Iran’s Revolutionary Guard has made claims of its own, and the public picture remains murky. If a Chinese radar did help cue Iranian defences onto a stealth fighter, though, it turns an abstract worry about Chinese counter-stealth exports into something concrete.

Why it matters — and what is still unproven

Strip away the detail and the throughline is simple: Chinese hardware turning up in an Iranian shootdown of an American jet. If accurate, it would mean Beijing’s air-defence and counter-stealth exports have now been tested against the best aircraft the U.S. fields — which is exactly the part Washington cannot shrug off.

The necessary caution is just as important. This is sourced reporting and analysis, not a Pentagon statement. Attributing a kill in the fog of a short, intense war is genuinely hard; debris is ambiguous, and almost everyone with knowledge of the episode has a reason to shade the story. Treat it as the most credible current theory, not the final word. But if U.S. investigators are right, the most consequential weapon in the Iran air war may not have been Iranian at all.

Sources: NBC News; The Jerusalem Post; South China Morning Post; Defense Express.