The nuclear dispute remains the core of the Iran conflict because it is the issue that both Washington and Tehran still treat as non-negotiable, shaping everything from sanctions relief to military pressure and the prospects for any wider regional deal.

US military action near the Strait of Hormuz was followed by fresh remarks from Donald Trump, who said Tehran would not be allowed to emerge as a nuclear-armed state.

What happens to Iran’s enriched uranium stockpile, including the 970 pounds that it has highly concentrated to near-weapons grade, is one of the primary sticking points as the US and Iran have trudged through weeks of negotiations to potentially end the Iran war.

Iran permitted monitors at the United Nations atomic watchdog this week to visit its Bushehr nuclear power plants while stonewalling inspectors’ demands to verify the condition and location of its enriched uranium stockpile.

VIENNA, June 4 (Reuters) - The U.N. nuclear watchdog sent a report to member states on Thursday with no major changes to its assessment of Iran's nuclear programme, despite three months of U.S.-Israeli war with the stated aim of preventing Iran from building an atomic bomb.

The International Atomic Energy Agency (IAEA) is demanding immediate access to more than a dozen nuclear sites in Iran, according to a report obtained by dpa on Thursday. Tehran only granted the

Iran’s attack last month on a nuclear power plant in the United Arab Emirates has prompted the world’s atomic watchdog to look at whether reactors’ external power supply lines need additional protection against the threat of war.

President Trump's envoys, Steve Witkoff and Jared Kushner, visited Oak Ridge, Tennessee, to collaborate with nuclear experts for future negotiations with Iran. Oak Ridge is known for its expertise in uranium processing and centrifuge technology.