The representatives pointed to "Iran's significant noncompliance" with the nuclear agreement.
Such a deal would mean some partial, but not full, nuclear concessions by Iran, in exchange for some partial, but not full, sanctions relief by the West.
Israel has reaffirmed its capability for a preemptive strike on Iran, which would likely lead to a multifront war with serious ramifications for the region.
The IAEA chief noted that Iran’s stockpile of enriched uranium has risen by over a quarter in three months.
Reza Pahlavi's trip underscores Israel’s message of unity with the Iranian people.
The proposed agreement would reportedly see some sanctions being eased in exchange for a partial freezing of the Iranian nuclear program.
The chairman of the Joint Chiefs of Staff told a House panel that “from a time of Iranian decision,” the Islamic Republic could produce fissile material for a nuclear weapon in less than two weeks.
Netanyahu and his British counterpart Rishi Sunak are expected to discuss strengthening the strategic ties between Israel and the United Kingdom and increasing security and intelligence cooperation.
Grossi's statements came after extended meetings with key officials in Iran over the weekend.
Diplomatic Affairs: Europeans are furious with Tehran at a level not seen since long before the 2015 JCPOA deal.