The Khorramshahr-4 is likely the intermediate-range ballistic missile that Iran used in the attempted attack on Diego Garcia, which analysts had previously assessed may have a range of +4,000km, though it had only been proven at between 2,000-3,000km. Such an attack would suggest that the Khorramshahr-4, which can carry a cluster and other unconventional warheads, could be used by Iran to strike almost the entirety of Europe, possibly as far as France and the United Kingdom.

The Khorramshahr-4 is likely the intermediate-range ballistic missile that Iran used in the attempted attack on Diego Garcia, which analysts had previously assessed may have a range of +4,000km, though it had only been proven at between 2,000-3,000km. Such an attack would suggest that the Khorramshahr-4, which can carry a cluster and other unconventional warheads, could be used by Iran to strike almost the entirety of Europe, possibly as far as France and the United Kingdom.OSINTdefender (@sentdefender)According to the Wall Street Journal, citing multiple U.S. officials, Iran has targeted the joint U.S.-UK base at Diego Garcia in the Indian Ocean with two intermediate-range ballistic missiles (IRBM). According to the report, one missile failed in flight whilst the other was engaged by a U.S. destroyer utilizing an SM-3 interceptor, but a successful interception was not confirmed. None of the missiles hit the base. This is notable as Iranian long-range precision fires have not previously been publicly assessed as having the range to hit such a target as Diego Garcia, as the base is some 4,000 kilometers from Iran proper.—  https://x.com/sentdefender/status/2035155378632024129

— OSINTdefender (@sentdefender) Mar 21, 2026