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Newly released satellite images show that Iran has recently built a concrete ‌shield over a new facility at a sensitive military site and covered it in soil, advancing work at a location reportedly bombed by Israel in 2024 amid soaring tensions with ⁠the United States and the threat of regional war.

The images also show that Iran has ⁠buried tunnel entrances at a nuclear site bombed by Washington during Israel’s 12-day war with Iran last year – which the US joined on Israel’s behalf – fortified tunnel entrances near another, and has repaired missile bases struck in the conflict.

They offer a rare glimpse of Iranian activities at some of the sites at the centre of tensions with Israel and the US.

Some 30km (20 miles) southeast of Tehran, the Parchin complex is one of Iran’s most sensitive military sites. Western intelligence has suggested Tehran carried out tests relevant to nuclear bomb detonations there more than 20 years ago. Iran has always denied seeking ⁠atomic weapons and says its nuclear programme is purely for civilian purposes.

Neither US intelligence nor the UN nuclear watchdog found any evidence last year that Iran was pursuing nuclear weapons.

Israel reportedly struck Parchin in October 2024. Satellite imagery taken before and after that attack shows extensive damage to a rectangular building at Parchin, and apparent reconstruction in images from November 6, 2024. Imagery from October 12, 2025, shows development at the site, with the skeleton of a new structure visible and two smaller structures adjacent to it.

Progress is apparent in imagery from November 14, with what appears to be a metallic roof covering the large structure. By February 16, it cannot be seen at all, hidden by what experts say is a concrete structure.

The Institute for ‌Science and International Security (ISIS), in a January 22 analysis of satellite imagery, pointed to progress in the construction of a “concrete sarcophagus” around a newly built facility at the site, which it identified as Taleghan 2.

ISIS founder David Albright wrote on X: “Stalling the negotiations has its benefits: Over the last two to three weeks, Iran has been busy burying the new Taleghan 2 facility … More soil is available and the facility ⁠may soon become a fully unrecognizable bunker, providing significant protection from aerial strikes.”

The institute also reported in late January that satellite images showed new efforts to bury two tunnel entrances at the Isfahan complex – one of the three ⁠Iranian uranium-enrichment plants bombed by the US in June during the war. By early February, ISIS said all entrances to the tunnel complex were ⁠”completely buried”.

Other images point to ongoing efforts since February 10 to “harden and defensively ⁠strengthen” two entrances to a tunnel complex under a mountain some 2km (1.2 miles) from Natanz – the site that holds Iran’s other two uranium enrichment plants.

This comes as Washington seeks to negotiate a deal with Tehran on its nuclear programme while threatening military action if talks fail.

On Tuesday, US and Iranian representatives reached an understanding on main “guiding principles” during a meeting in Geneva, but felt short of achieving any breakthrough. The meeting in the Swiss city came after a first round of talks in Oman on February 6.

Reports suggest that Tehran would make detailed proposals in the next two weeks to close gaps. Among the many hurdles in the negotiations is the US push to widen the scope of the deal to include restrictions on Iran’s ballistic arsenal and support for its allies in the region.

That is fuelled by Israel’s demands and regional narrative, with Israeli Prime Minister Benjamin Netanyahu repeatedly pressing US President Donald Trump to shift from nuclear-only parameters.

Tehran has insisted that these provisions are non-negotiable but that it is open to discuss curbs on its nuclear programme in exchange for sanctions relief.

A previous negotiating effort collapsed last year when Israel launched attacks on Iran, triggering the 12-day war that Washington joined in by bombing key Iranian nuclear sites.

As diplomacy forges a path, both parties are ramping up military pressure.

The Islamic Revolutionary Guard Corps (IRGC) held a series of war games on Monday and Tuesday in the Strait of Hormuz to prepare for “potential security and military threats”.

On Wednesday, Tehran announced new joint naval drills with Russia in the Sea of Oman. Rear Admiral Hassan Maqsoudlou said the exercises were aimed at preventing any unilateral action in the region, and enhancing coordination against threats to maritime security, including risks to commercial vessels and oil tankers.

The US has also escalated its military build-up in the region. Trump has ordered a second aircraft carrier to the region, with the first, the USS Abraham Lincoln and its nearly 80 aircraft, positioned about 700 kilometres (435 miles) from the Iranian coast as of Sunday, according to satellite imagery.

The Trump administration also issued new threats against Tehran with White House press secretary Karoline Leavitt saying on Wednesday that “Iran would be very wise to make a deal” with the US. Trump escalated his rhetoric on social media.

“Should Iran decide not to make a Deal,” the US may need to use an Indian Ocean airbase in the Chagos Islands, “in order to eradicate a potential attack by a highly unstable and dangerous Regime”, he wrote on his Truth Social platform.

Israeli Prime Minister Benjamin Netanyahu has outlined the conditions he considers necessary for any prospective deal between the United States and Iran, including the dismantling of all of Tehran’s nuclear infrastructure.

His comments on Sunday came as Iranian Minister of Foreign Affairs Abbas Araghchi headed to Switzerland for a second round of nuclear talks with the US.

Speaking at the annual Conference of Presidents of Major American Jewish Organizations, Netanyahu said he was sceptical of a deal, but had told US President Donald Trump last week that any agreement must include several elements.

“The first is that all enriched material has to leave Iran,” he said.

“The second is that there should be no enrichment capability – not stopping the enrichment process, but dismantling the equipment and the infrastructure that allows you to enrich in the first place”.

The third, he said, was resolving the issue of ballistic missiles.

Netanyahu also called for sustained inspections of Tehran’s nuclear programme.

“There has to be real inspection, substantive inspections, no lead-time inspections, but effective inspections for all of the above,” he said.

Iran and the US resumed nuclear negotiations in Oman on February 6, months after previous talks collapsed when Israel launched an unprecedented bombing campaign against Iran last June, which started a 12-day war.

The US joined in the attacks, bombing three Iranian nuclear sites.

Netanyahu’s comments mark the first time he has spoken publicly on the discussions with Trump in Washington, DC, last Wednesday. The meeting was their seventh since Trump returned to office last year.

Trump told reporters afterwards that they had reached no “definitive” agreement on how to move forward with Iran, but that he had “insisted that negotiations with Iran continue to see whether or not a deal can be consummated”.

According to a report by Axios, the two leaders agreed to intensify economic strangleholds on Iran, mostly on its oil sales to China. More than 80 percent of Iranian oil exports current go to China.

The report, which cited US officials, said Netanyahu and Trump agreed in their meeting on the necessary end state: an Iran without the capability to obtain nuclear weapons. But they disagreed about how to get there.

Netanyahu told Trump it would be impossible to make a good deal, while Trump said he thought it was possible. “Let’s give it a shot”, Trump said, according to Axios.

Iran has long denied any intent to produce nuclear weapons, but has said it is prepared to discuss curbs on its atomic programme in exchange for the lifting of sanctions. It has ruled out linking the issue to missiles, however.

The CBS broadcaster, meanwhile, reported on Sunday that Trump had told Netanyahu during a meeting in Florida in December that he would support Israeli strikes on Iran’s ballistic missile programme if the US and Iran could not reach a deal.

The network cited two sources familiar with the matter.

There was no immediate comment from the US or Israel on the CBS report.

The renewed push for diplomacy comes after Trump threatened new attacks on Iran and sent a US aircraft carrier to the region, citing a deadly crackdown on antigovernment protesters in January.

Tensions in the region remain high, meanwhile.

On Friday, Trump said he was sending a second aircraft carrier to the Middle East, and openly discussed changing Iran’s government.

Asked if he wanted a government change in Iran, Trump responded that it “seems like that would be the best thing that could happen”.

Asked why a second aircraft carrier was headed to the Middle East, Trump said: “In case we don’t make a deal, we’ll need it … if we need it, we’ll have it ready.”

For its part, Iran has promised to retaliate to any attack, saying it will strike US bases in the Middle East.

The continued tensions have sparked fears of a wider regional war.

Iran has a long history of coups, revolutions and invasions, leaving it with a complex web of economic, religious and military alliances.

On paper, it’s meant to create a balance between theocracy and democracy. In reality, only one man is truly in control.

Tehran, Iran – Iran’s President Masoud Pezeshkian has called on the United States to respect his country as the two nations look ahead to another round of nuclear negotiations next week following mediated discussions in Oman.

“Our reasoning on the nuclear issue is based on rights stipulated in the Non-Proliferation Treaty,” he wrote in a post on X on Sunday. “The Iranian nation has always responded to respect with respect, but cannot withstand the language of force”.

Pezeshkian described the indirect talks held in Oman on Friday as a “step forward” and said his administration favours dialogue.

Iranian officials are highlighting sovereignty and independence and are signalling eagerness for nuclear-only negotiations, while rejecting a military build-up in the region by the US.

Speaking at a forum hosted by the Ministry of Foreign Affairs in Tehran, the country’s chief diplomat Abbas Araghchi pointed out that the Islamic Republic has always emphasised independence since overthrowing US-backed Mohammad Reza Shah Pahlavi in a 1979 revolution.

“Before the revolution, the people did not believe their establishment to have possessed true independence,” Araghchi said.

The messaging comes as the anniversary of the revolution approaches on Wednesday, when state-organised demonstrations have been planned across the country. Iranian authorities have in previous years exhibited military equipment, including ballistic missiles, during the rallies.

Araghchi said during the event in the capital that Iran is unwilling to forego nuclear enrichment for civilian use even if it leads to more military attacks by the US and Israel, “because no one has the right to tell us what we must have and must not have”.

However, the diplomat added that he told US envoys Steve Witkoff and Jared Kushner in Muscat on Friday that “there is no way but negotiations”. He said China and Russia have also been informed of the content of the talks.

“Being afraid is lethal poison in this situation,” Araghchi said about Washington amassing what US President Donald Trump has called a “beautiful armada” near Iran’s waters.

‘Push the region back years’

Iran’s top military commander on Sunday issued a new warning that the entire region will be engulfed in conflict if Iran is attacked.

“While being prepared, we genuinely have no desire to see the outbreak of a regional war,” Major General Abdolrahim Mousavi told a gathering of air force and air defence commanders and personnel.

“Even though aggressors will be the target of the flames of regional war, this will push back the advancement and development of the region by years, and its repercussions will be borne by the warmongers in the US and the Zionist regime,” he said in reference to Israel.

According to Mousavi, Iran “has the necessary power and preparedness for a long-term war with the US”.

But many average Iranians are left in limbo without much hope that the talks with the US will lead to results, including for the country’s heavily declining economy.

“I was 20 when the first negotiations with the West over Iran’s nuclear programme were held about 23 years ago,” Saman, who works at a small private investment firm in Tehran, told Al Jazeera.

“Our best years are behind us. But it’s even more sad to think that some of the youth who were born at the start of the negotiations were killed on the streets during the protests last month with many hopes and dreams.”

‘They never returned’

Iran is witnessing tense time and threats of a massive US military strike. But the Islamic Republic has not overcome anti-government protests that shook the nation, denouncing the collapse of the national currency, soaring prices and economic hardship.

State television continues to broadcast confessions of Iranians arrested during the nationwide protests, many of whom are accused by the state of working in line with the interests of foreign powers.

In a report aired late on Saturday, a woman and multiple men with blurred-out faces and in handcuffs could be seen saying they were led by a man who allegedly received weapons and money from Mossad operatives in neighbouring Iraq’s Erbil.

“He only wanted more people to die; he shot at everyone,” one of the confessing men said about what allegedly transpired during unrest in the Tehranpars district in the eastern part of the capital, backing the state’s claim that “terrorists” are responsible for all deaths.

Iranian authorities have accused the US, Israel and European countries of instigating the protests.

But international human rights organisations and foreign-based opposition groups accuse state forces of being behind the unprecedented killings during the protests, which were carried out mostly on the nights of January 8 and 9.

The Iranian government claims 3,117 people were killed, but the US-based Human Rights Activists News Agency (HRANA) says it has documented nearly 7,000 fatalities and is investigating more than 11,600 cases. The United Nations special rapporteur on Iran, Mati Sato, said more than 20,000 may have been killed as information trickles out despite heavy internet filtering.

Al Jazeera cannot independently verify these figures.

Amid numerous reports that dozens of medical staff were arrested for treating wounded protesters and remain incarcerated in harsh conditions, Iran’s judiciary issued a rejection of the allegations late Saturday. It claimed that only “a limited number of medical personnel were arrested for participating in riots and playing a role in the field”.

A large number of schoolchildren and university students were also reportedly among tens of thousands arrested during and in the aftermath of the nationwide protests. The Ministry of Education claimed last week that it did not know how many schoolchildren were arrested, but could confirm that all have since been released.

The Coordinating Council of Iranian Teachers’ Trade Associations on Sunday released the four-minute video below, titled “200 empty school desks”, which shows the schoolchildren and teenagers confirmed killed during the protests. Many were accompanied by their parents when killed.

One month after the killings, countless families are left grieving and continue to release videos commemorating their loved ones online.

A message on Instagram calling on the international community to keep talking about the people of Iran has now been shared more than 1.5 million times.

“One month ago today, thousands woke up and ate breakfast for the last time without knowing it, and kissed their mother for the last time without knowing it,” the message reads. “They lived for the last time and never returned.”

As the prospect of a conflict between the United States and Iran looms, analysts within Israel have questioned the country’s capacity to determine the outcome of a confrontation in a region that, just months ago, it had regarded itself as on the brink of dominating.

“The [Israeli] opposition are accusing [Israeli Prime Minister Benjamin] Netanyahu of giving in to [US President Donald] Trump and ending the war on Gaza too soon,” said Israeli political analyst Ori Goldberg. “[Israel is] being hounded out of Lebanon, [its] freedom to operate within Syria has been halted. All that’s left to [Israel] is the freedom to kill Palestinians, and with Qatar, Turkiye and Egypt now being involved in Gaza, over Israel’s objection, it won’t be allowed to do that for much longer.”

While senior Israeli figures including Netanyahu are liaising directly with the Trump administration over a possible attack on Iran, analysts say it is increasingly clear that Israel’s ability to shape regional developments is diminished.

After two years of genocide in Gaza, where Israel has killed more than 71,800 Palestinians, the US now appears to have taken the lead and has overruled Israel when it objected to the admission of Turkiye and Qatar to the board that will oversee the administration of Gaza.

In Syria, Israeli ambitions to hobble the new government of President Ahmed al-Sharaa also appear to have fallen foul of Trump’s White House, which is actively pushing the Netanyahu government to reach an accommodation with Damascus. In Lebanon, too, the US continues to play a defining role in determining Israeli actions, with any possible confrontation between Hezbollah and Israel said to be dependent upon Washington’s green light.

What influence Israel could wield over US action in Iran, according to many, is uncertain, even to the point that Washington could enter negotiations with no regard for Israeli concerns.

“There’s a worry that Donald Trump will not strike in Iran, which will continue to endanger Israel, and instead negotiate a conclusion that’s good for him as a peacemaker and leave the regime in place,” Netanyahu’s former aide from the early 90s and political pollster, Mitchell Barak, told Al Jazeera from West Jerusalem. “He’s transactional. That’s what he does. It’ll be like Gaza. Israel will secure their ultimate victory, then lose control to the US, whose interests – under Trump – don’t always align with ours.”

‘Big Bad Wolf’

While analysts’ expectations that Netanyahu could influence Trump’s actions in Iran may be limited, their sense that a fresh war would buy the Israeli prime minister relief from his current difficulties seems universal.

“Iran is Israel’s ‘Big Bad Wolf’,” Chatham House’s Yossi Mekelberg said of the geopolitical opponent that many in Israel believe exists only to ensure Israel’s destruction.

Mekelberg added that a war with Iran would serve as a useful distraction from Netanyahu’s domestic troubles, such as an inquiry into government failures related to the October 7, 2023 Hamas attack on Israel, his attempt to weaken the oversight powers of the judiciary, and his ongoing corruption trials.

“There’s a saying in Hebrew: ‘the righteous have their work done by others.’ I’m not for a moment saying that Netanyahu is righteous, but I’m sure he’s keen on having his work done by others,” Mekelberg said.

War fears

How much public appetite there may be for a confrontation with Iran is unclear.

Israel was able to heavily damage Iran during the conflict it started in June last year. But Iran was also able to repeatedly pierce Israel’s defences, making it clear that the Israeli public is not safe from the wars its state pursues in the region.

The threat – rather than the reality – of a confrontation with Iran also serves the prime minister’s ends, Goldberg noted. “Netanyahu has no need for a war. He doesn’t really need to do anything other than survive, which he’s proven adept at,” the analyst said, referring to the absence of any credible political rival, as well as the risk that an actual war may highlight Israel’s diplomatic weakness in its dealings with the US.

“There’s this joke phrase that became popular with those resisting Netanyahu’s judicial reform: ‘This time he’s done’,” Goldberg said. “Netanyahu’s never done. He committed a genocide, and all people in Israel can object to is the management of it. He’s currently losing military and diplomatic influence across the region, and few are noticing. I can’t imagine that this will be ‘it’ either.”