Diplomats say that the escalation is not as big as feared, and involves installation of clusters of centrifuges, the machines that enrich uranium, at both its underground enrichment sites.
President Biden prefers to let the Iranian bomb program advance but not the IDF.
This marks the IAEA's first condemnation of Iran since 2022. Iran announced that it would respond, but didn't mention how.
Former defense minister Avigdor Liberman warned that Iran's axis plans to attack Israel from all fronts within two years.
The US government is reportedly opposed to confronting Iran at this stage because of a mix of concern that Tehran might escalate the situation into a crisis.
The European Union and the United States added new sanctions against Iran on Friday after its repeated supplies of weaponry to Russia and terror groups in the Middle East.
The deaths of Iran's president and foreign minister in a helicopter crash have caused a pause in the UN nuclear watchdog's talks with Tehran.