The two threats would reverse major achievements of the agreement, although Iran omitted important details about how far it might go to returning to the status quo before the pact, when Western experts believed it could build a bomb within months.
The steps Iran has taken are all easily reversible. Yet the new move Iran said it was taking Sunday — to increase enrichment levels beyond the 3.67% purity that is the ceiling under the deal — is the most threatening.
President Donald Trump, who campaigned on a promise of tearing up the deal because it didn't address Iran's ballistic missile program or its involvement in regional conflicts, withdrew America from the accord in May 2018.
"I call on my friends, the heads of France, Britain, and Germany - you signed this deal and you said that as soon as they take this step, severe sanctions will be imposed - that was the Security Council resolution. Where are you?" Benjamin Netanyahu said.
The declaration comes at a time of sharply increased U.S.-Iranian confrontation, a year after Washington quit the pact and reimposed sanctions that had been lifted under the accord in exchange for Tehran curbing its nuclear work.
"We can confirm that IAEA Director General Yukiya Amano has informed the Board of Governors that the Agency verified on 1 July that Iran's total enriched uranium stockpile exceeded (the deal's limit)," an IAEA spokesman said in a statement.