The head of UN's nuclear watchdog warns Iran is 'not entirely transparent' on its atomic program

Iran, after the collapse of its 2015 nuclear deal with world powers, has pursued nuclear enrichment just below weapons-grade levels. Tehran has accumulated enough enriched uranium to build several weapons if it chooses. However, U.S. intelligence agencies and others assess that Iran has yet to begin a weapons program. Israel long has been believed to have its own nuclear weapons program.

Iran is "presenting a face which is not entirely transparent when it comes to its nuclear activities. Of course this increases dangers," Grossi said. "There's loose talk about nuclear weapons more and more, including in Iran recently. A very high official said, in fact, we have everything, it's disassembled. Well, please let me know what you have."

Iran, as a signatory to the Treaty on the Non-Proliferation of Nuclear Weapons, has pledged to allow the IAEA to visit its atomic sites to ensure its program is peaceful. Tehran also agreed to additional oversight from the IAEA as part of the 2015 nuclear deal.

Grossi did not identify the Iranian official who made the comment. However, in an Iranian state television show late Sunday, Salehi said that the country had all it needed to build a weapon.

"We have all the (pieces) of nuclear science and technology. Let me give an example," Salehi said. "What does a car need? It needs a chassis, it needs an engine, it needs a steering wheel, it needs a gearbox. Have you made a gearbox? I say yes. An engine? But each one is for its own purpose."

Salehi made a similar comment Saturday.

"We have it in our hands," he said then.

Since 2022, Iranian officials have spoken openly about something long denied by Tehran as it enriches uranium at its closest-ever levels to weapons-grade material: the Islamic Republic is ready to build an atomic weapon at will. That includes Kamal Kharrazi, an adviser to Iran's Supreme Leader Ayatollah Ali Khamenei, who told Al Jazeera that Tehran has the ability to build nuclear weapons but does not intend to do so.

Salehi's comments represent an escalation. He served as the head of the civilian Atomic Energy Organization of Iran under then-President Hassan Rouhani, a relative moderate within Iran's theocracy who reached the 2015 deal with world powers.

The hardening of Iran's position comes as militias it arms in the region — Lebanon's Hezbollah and Yemen's Houthi rebels — have launched attacks targeting Israel. The Houthis continue to attack commercial shipping in the region, sparking repeated airstrikes from the U.S. and the United Kingdom.

Meanwhile Tuesday, Iran released footage of a ballistic missile being fired off the Shahid Mahdavi, a container ship transformed by Iran's paramilitary Revolutionary Guard into a floating base. The footage showed a Fateh missile fired from a launcher disguised as a shipping container, potentially meaning Iran could hide the launcher on other vessels.