Signatories to the agreement will hold talks as Tehran continues to ramp up nuclear activities

Amid tensions with US, Tehran 'voluntarily providing the IAEA with access' to locations in central Iran and close to capital

Visit comes as the US is pushing to 'snapback' UN sanctions on Iran for allegedly violating its 2015 nuclear deal with world powers

Spokesperson tells state TV that security officials will 'reveal in due time' the cause of the explosion at the nuclear site

Tehran's envoy to IAEA says Rafael Grossi coming at Islamic Republic's invitation, without link to Trump's attempts to trigger 'snapback' mechanism

Focus will be on sites thought to be from early 2000s, before Iran signed the 2015 nuclear deal with world powers, which Tehran says IAEA inspectors have no legal basis to inspect

White House claims 'legal right' to reimposing UN restrictions on Tehran, to take effect in 30-days, as both allies and foes call move illegal, doomed to failure

Israel's new UN envoy praises Washington-brokered UAE normalization deal, calls for altering UNIFIL mandate; meeting joined by US ambassador to UN and special envoy on Iran

FM says UN Security Council should stop Washington's unilateral 'misuses' of council resolutions and 'force' American accountability for damage it has caused to Iran

Top US diplomat accuses countries of 'siding with ayatollahs'; Russia withdraws request for UN meeting to extend sanctions relief after apparent US move to block summit