Iran expanded the conflict in West Asia by launching a twin missile strike on the joint US-UK base at Diego Garcia, a remote Indian Ocean atoll roughly 3,800 km from Iran. Iranian authorities also said they hit an Israeli F-16. One missile reportedly failed in flight and the other was intercepted by a US warship, according to reports.
Diego Garcia hosts strategic facilities and can support long-range bomber operations, making it a significant military platform in the region. The attack underscores Tehran’s ability to project force at much greater distances than it has publicly acknowledged.
Analysts say the strike demonstrated missiles approaching 4,000 km in range — a capability highlighted earlier this year by Iran Watch, the Wisconsin Project on Nuclear Arms Control think-tank. Iran has officially declared a 2,000 km limit for its missiles, but Western assessments point to use of a longer-range system, likely the Khorramshahr-IV. Iran Watch had assessed that this missile was “likely deployed” and could exceed declared ranges if fitted with a lighter warhead.
A missile on the order of 4,000 km flies on a high parabolic trajectory, exiting and re-entering the atmosphere. Systems with ranges above 3,000 km are classed as intermediate-range ballistic missiles (IRBMs). Since the 1980s Iran has advanced its missile program, improving re-entry vehicle design and warhead maneuverability; much of this work is centered at the Shahid Hemmat Missile Industries Complex in Tehran.
U.S. government assessments mirror those concerns. A June congressional report titled “Iran’s Ballistic Missile Programs” said Iran “continues to bolster the lethality and precision” of domestically produced missiles and holds the largest regional stockpiles. The U.S. National Air and Space Intelligence Center lists at least 14 Iranian ballistic missile variants, and the U.S. Institute of Peace has warned that Iran’s space-launch vehicle program could have dual-use potential for ballistic-missile development.
Observers also note likely technological links with North Korean designs. The Khorramshahr appears to be based on North Korea’s Hwasong-10 (Musudan), which U.S. intelligence estimates can reach roughly 2,500–4,000 km—well above Iran’s declared 2,000 km limit for comparable missiles.
Separately, the International Atomic Energy Agency said Iran notified it that the Natanz uranium-enrichment site had been struck. The IAEA reported no detected increase in off-site radiation levels so far and is assessing the situation. Director General Rafael Grossi urged military restraint and warned that attacks on nuclear facilities risk dangerous radiological incidents.
While preliminary monitoring found no detectable radioactive leakage outside Natanz, experts caution that even localized damage at an enrichment site can pose safety, environmental, and stability risks for the region. Natanz, central to Iran’s enrichment program, has been targeted in past incidents; the IAEA said it is seeking further information from Iranian authorities and maintaining contact with inspectors on the ground as it evaluates the impact.
