Four OPEC+ sources said they only heard details of the Saudi cut at a news conference and the idea of a cut didn't come up during a weekend of discussions
"Any political action by the United States and the three European countries in the agency (IAEA) will undoubtedly be met with a proportionate, effective and immediate response from Iran," Iranian Foreign Minister Hossein Amirabdollahian was quoted as saying by state media.
Amirabdollahian also said the IAEA head's visit to Israel, Iran's arch-enemy, was in conflict with the agency's impartiality, the media reported.
The United States, France, Britain and Germany are pushing for the UN nuclear watchdog's Board of Governors to rebuke Iran for failing to answer longstanding questions on uranium traces at undeclared sites, a draft resolution seen by Reuters showed.