What if Iran really did buy export variant of China’s YJ-12 supersonic missile?

A Reuters report published on February 24, citing six unnamed sources, claimed China was on the verge of completing a significant arms deal with Iran. The deal reportedly involved the CM-302, the export-approved version of China's formidable YJ-12 supersonic anti-ship cruise missile. Known as an 'aircraft-carrier killer,' the YJ-12 is a cornerstone of China's anti-access/area-denial strategy, capable of Mach 4 speeds and delivering a potent 200kg semi-armour-piercing warhead with high terminal manoeuvrability.

Despite the detailed sourcing, China's foreign ministry issued a firm denial the following week, stating the report was 'not true.' The timing was critical, emerging just days before major U.S.-Israeli air strikes on Iranian targets. The potential deployment of such advanced Chinese weaponry by Iran represents a major strategic concern. Even with a reduced range for export compliance, CM-302 missiles stationed along Iran's coast could threaten naval traffic across nearly the entire Persian Gulf, the strategic Strait of Hormuz, and much of the Gulf of Oman.

The report and its subsequent denial highlight the opaque nature of international arms deals and the high stakes of military technology proliferation in volatile regions. For the U.S. and its allies, the mere possibility of Iran acquiring such capable anti-ship missiles would necessitate a reassessment of naval operations and force posture in the Middle East, underscoring how advanced weapons exports can rapidly alter regional power balances.