Iran delivered a conciliatory message to Western leaders in Davos on Wednesday, with a top official denying it wants nuclear weapons and offering talks about opportunities, days after its arch adversary Donald Trump's return to the White House.

IAEA chief Grossi urges diplomacy between US, Iran on nuclear issue; UN chief pushes Iran to renounce nuclear weapons

The United Nations nuclear watchdog warned that Iran has hit the "gas pedal" in its nuclear program as it continues to ramp up production of near-weapons grade uranium as President Donald Trump enters the White House.

Iran is "pressing the gas pedal" on its enrichment of uranium to near weapons grade, U.N. nuclear watchdog chief Rafael Grossi said on Wednesday, adding that Iran's recently announced acceleration in enrichment was starting to take effect.