Iran's Islamic Revolutionary Guard Corps says it is building underground military complexes that can keep producing and storing weapons even under heavy air attack.

At a news conference in Tehran on Saturday, Guards spokesperson Hossein Mohebbi listed what he called recent achievements, including an underground missile city that is due to be unveiled. He said missile and drone production lines had been moved rapidly from the surface into subterranean sites so that manufacturing could continue while adversaries assumed stockpiles were running down.

Mohebbi also claimed advances in stealth features that, in his account, helped Iranian missiles and drones pierce air defences in earlier fighting with the United States and Israel. He insisted every Aerospace Force weapon now in use was made with domestic knowledge rather than reverse engineered from captured gear.

The same briefing repeated a warning that previous informal limits on the range of Iranian ballistic missiles no longer apply. That follows remarks by Supreme Leader Mojtaba Khamenei that there would be no geographical limits on Iran's reply if it were attacked again.

The conflict that began on 28 February closed the Strait of Hormuz and drove a sharp rise in energy prices. Mediation has intensified in recent days. On Friday President Donald Trump said US forces had carried out limited strikes on Qeshm Island while also claiming progress in talks with Tehran.

Iran has warned it could hit Gulf energy infrastructure if major fighting resumes. Washington has added sanctions and says a new Central Command task force will try to stop land routes used to move advanced weapons. A naval blockade aimed at Iranian oil exports remains in place.

Separately, Iranian reporting has cited earlier assessments that previous rounds of fighting damaged US bases across the region and struck Gulf infrastructure many times, with large economic losses. Those claims could not be independently verified from the public statements alone, but they form part of the narrative Tehran is pushing as it advertises hardened production sites.