Foreign Minister Abbas Araghchi said Thursday that Iran will not negotiate under "intimidation" as he held crunch talks with the UN nuclear chief weeks before US President-elect Donald Trump takes office.

International Atomic Energy Agency chief Rafael Grossi is set to visit Tehran for crucial talks on Iran's nuclear programme, warning just ahead of his trip that room for manoeuvre is narrowing.

International Atomic Energy Agency chief Rafael Grossi is set to visit Tehran for urgent talks on Iran’s nuclear program, emphasising the narrowing space for diplomatic solutions amid rising tensions

Rafael Grossi says IAEA must have more access to nuclear program, warns Tehran has a large amount of nuclear material that can be used for a bomb

International Atomic Energy Agency chief Rafael Grossi is set to visit Tehran on Wednesday for crucial talks on Iran's nuclear program, warning just ahead of his trip that room for maneuver is narrowing.

Rafael Grossi, head of the International Atomic Energy Agency, the U.N. nuclear watchdog, says the window of opportunity to diplomatically engage with Iran is beginning to "shrink."

U.N. atomic watchdog chief Rafael Grossi arrived in Iran for talks on Wednesday, Iranian state media reported, a day after he appealed to Iran's leadership to take steps to resolve longstanding issues with his agency over its nuclear programme.

Iran is willing to resolve disputes with the United Nations nuclear agency over its compliance with safeguards on its atomic programme but will not do so under pressure, Iran's foreign minister said after meeting the IAEA head on Thursday.