UN atomic watchdog says Iran complying

Iran is continuing to implement its nuclear commitments under a deal with major powers, the UN atomic watchdog policing the deal says, a day after President Donald Trump said the US was pulling out of the accord.

"Iran is subject to the world's most robust nuclear verification regime under the JCPOA, which is a significant verification gain," International Atomic Energy Agency (IAEA) chief Yukiya Amano said in a statement, using the deal's official name, the Joint Comprehensive Plan of Action.

"As of today, the IAEA can confirm that the nuclear-related commitments are being implemented by Iran," he said, adding that the IAEA was "closely monitoring developments" related to the deal.