US President Donald Trump on 15 July warned that any activity at Iran's Pickaxe Mountain nuclear site would prompt an immediate American military response, saying the United States Space Force was actively surveilling the facility. The warning, delivered in a Fox News interview, marks one of the sharpest public threats from Washington toward Tehran since the earlier US strikes on Iranian nuclear infrastructure.

The Pickaxe Mountain Warning

Trump said Space Force surveillance systems were trained on the facility following reports of possible activity. 'We're looking at Pickaxe because somebody said there's a little activity,' he said. He added that the surveillance cameras were powerful enough to read a person's name badge from space, and that other previously struck Iranian nuclear sites also remained under observation.

Despite the warning, Trump acknowledged uncertainty about what, if anything, was occurring at the location. 'Nobody knows about Pickaxe. By the way, nobody knows if they even are doing anything in Pickaxe,' he said. 'It's just something that comes up.' He nonetheless made clear that even a minor indication of activity would be enough to act: 'If there's even just a small amount, we'll hit it and we'll hit it hard.'

Satellite Images and the Taleghan Facility

During the interview, Fox News correspondent Trey Yingst presented Trump with satellite images of the Taleghan facility, located outside Tehran, taken on 22 June and 7 July. The later image reportedly showed trucks, cranes, and what appeared to be freshly poured concrete — signs of renewed activity at a site previously targeted in US strikes.

Trump said he had been told that Iran poured concrete to seal the entrances to the facility. 'That they poured concrete to close up the entrances so we couldn't get into it,' he said, attributing the information to what he had been told rather than confirming it independently. He added that the United States could strike Taleghan again with minimal notice: 'We can hit that one very easily. You know, it only takes a matter of minutes for us to do it and do major damage.'

Operation Epic Fury and the Nuclear Timeline Claim

Trump referenced Operation Epic Fury, which he said he ordered on 28 February, involving B-2 bomber strikes against three Iranian nuclear sites. He claimed Iran had been within two weeks of obtaining a nuclear weapon at the time. 'They were going to have a nuclear weapon within two weeks,' he said. 'Had we not done the B2 bombers, had we not bombed their nuclear sites, their three nuclear sites.'

Weapons experts interviewed by Fox News separately questioned whether US bunker-buster bombs could penetrate deeply enough to destroy the Pickaxe Mountain site. Trump dismissed the concern: 'They can go deep. We have good, good stuff,' he said.

Iran's Position and the Broader Standoff

Iran has consistently maintained that its nuclear programme is intended for peaceful purposes. Its uranium enrichment activities and restrictions on international monitoring have, however, remained the central points of contention in its prolonged dispute with the United States and other Western nations. The latest exchange raises fresh questions about the durability of any diplomatic off-ramp, particularly as satellite imagery suggests continued movement at key sites despite prior strikes.

As both sides harden their public positions, the trajectory of US-Iran nuclear tensions will depend heavily on what intelligence assessments of Pickaxe Mountain and Taleghan ultimately conclude — and whether Washington chooses to act on ambiguous signals.