B-2 Spirit stealth bombers dropped dozens of 2,000-lb penetrator munitions on deeply buried Iranian Ballistic missile launchers over the past week. B-1B Lancers supplemented the strikes on missile storage and launch infrastructure. The 2,000-lb penetrator — designed to punch through hardened concrete and rock before detonating — was matched to a specific target set: the underground missile complexes Iran spent two decades constructing to survive exactly this kind of campaign.
Iran built these facilities with the lessons of Iraq in mind. After the United States destroyed Saddam Hussein's above-ground military infrastructure in 1991 and again in 2003, Tehran invested heavily in underground complexes — tunnels carved into mountain rock, housing launchers and ballistic missiles on mobile platforms. In 2015, IRGC Aerospace Force commander Brigadier General Amir Ali Hajizadeh gave state television cameras access to one such facility in a deliberate display of survivable deterrence. The B-2 campaign is Washington's direct answer to that investment.
Admiral Brad Cooper confirmed Ballistic missile launches are down 90% from Day 1 and drone launches down 83%. Joint Chiefs Chairman General Dan Caine attributed the decline to destroyed launch infrastructure and stockpiles . But Israeli analysts identified Iran's activation of its Decentralised Mosaic Defence doctrine, devolving launch authority to 31 autonomous provincial units precisely because centralised infrastructure was being destroyed. Whether the 90% drop reflects launchers that no longer exist or launchers that have dispersed and not yet fired is unresolved. IRGC salvos have shrunk — waves 16 and 17 on Wednesday comprised far fewer missiles than early-conflict barrages — but that is consistent with either explanation.
The larger consequence extends beyond this week. Iran's conventional missile force — the Shahab, Emad, Ghadr, and Khorramshahr variants — represented three decades of attempted modernisation into a state with a credible conventional deterrent. That investment has been degraded, and possibly destroyed, in seven days, alongside the surface fleet now half-sunk. What remains is the military posture the IRGC was designed for when it was established in 1979 and refined during the 1980–88 war with Iraq: asymmetric warfare, proxy operations through groups like Hezbollah and the Houthis, and attritional resistance rather than conventional force projection. The conventional capabilities destroyed this week were the work of a generation.
