US-Iran peace deal at risk? Why Tehran is ‘digging out’ its hidden missile arsenal despite ceasefire

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3 min readNew DelhiUpdated: May 31, 2026 07:04 PM ISTIran reportedly fired a Fateh-110 missile recently. (Photo: Wikimedia Commons)US Defence Secretary Pete Hegseth has warned that the American military is ready to restart attacks on Iran if a ceasefire deal is not reached between the two countries as Tehran appears to be ready to fire more long-range missiles at Israel and other countries in West Asia after reportedly digging out its buried arsenals.Recovery of underground missile capabilitiesAfter weeks of continuous strikes by Tel Aviv and Washington, Tehran was restricted from accessing its underground missile sites. The attacks which started on February 28 destroyed roads and buried tunnel entrances which would have led the Iranian administration to the underground missile sites, CNN reported.Satellite images have shown that Iran used bulldozers and dump trucks to clear the sites where underground missiles have been stored and it suggests that Tehran’s missile capabilities can’t be destroyed by striking tunnel entrances and other strategic spots, CNN reported quoting experts.Diplomatic deadlock and US readinessMeanwhile, the United States and Iran have reached a tentative agreement to reopen the Strait of Hormuz. But Hegseth on Saturday warned that Washington could restart its military campaign if a deal is not finalised.Also Read | We’re close to a ‘very good deal’: Trump on talks with Iran to extend ceasefire, reopen Strait of Hormuz“Our stockpiles are more than ​suited for that, both there and around the globe, ​so we’re in a very good place,” he said.Why is Iran digging its buried arsenals?According to Sam Lair, research associate at the James Martin Center for Nonproliferation Studies, if the war resumes Tehran is in position to “continue launching missiles so long as they have launchers and crews, even if production has halted.”Story continues below this ad“There’s nothing to prevent the launchers from being armed with the ample stockpile of missiles that the Iranians still have,” CNN reported Lair as saying.Accelerated excavation efforts and site statusSince the ceasefire was signed between Iran and US on April 8, pausing the ongoing conflict in West Asia, Tehran’s efforts to excavate the sites have accelerated significantly.Even during the hostilities, Iranian authorities were working to clear the tunnel entrances with the US and Israel continuously targeting the equipment used for digging the underground missile sites. This enabled the Islamic Republic to continue firing missiles throughout the conflict, but at a reduced pace.According to the CNN report, Iran has been able to unlock 50 of the 69 tunnel entrances that were attacked by the US and Israel at 18 underground missile sites.© IE Online Media Services Pvt LtdThe Express Global Desk at indianexpress.com which delivers authoritative, verified, and context-driven coverage of key international developments shaping global politics, policy, and migration trends. The desk focuses on stories with direct relevance for Indian and global audiences, combining breaking news with in-depth explainers and analysis. A major focus area of the desk is US immigration and visa policy, including developments related to student visas, work permits, permanent residency pathways, executive actions, and court rulings. 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Mashkoora Khan – Sub-editor focusing on global developments, with a strong emphasis on Canada visa, immigration, and study-related policy coverage. ... Read MoreStay updated with the latest - Click here to follow us on InstagramTags:Strait of HormuzUS Iran tensionsAdvertisementLoading Recommendations...May 31: Latest News01At Norway Chess, the Armageddon exhausts the players and thrills the crowd02RCB vs GT: Teams with similar batting philosophies but different depth03Best road trips near Mumbai to take this June for misty hills, beaches, and quick escapes04Building collapses near Saket, some students feared trapped, 12 rescued05Wife of key accused held from Ahmedabad airport; had flown in from DubaiAdvertisement