A top Iranian official said Saturday that US President Joe Biden’s comments that “other options” are available if diplomacy with Iran fails constitute “an illegal threat to another country” and give Tehran the “right to reciprocal response.”

Ali Shamkhani, the head of Iran’s Supreme National Security Council and a leading adviser to Supreme Leader Ali Khamenei, tweeted his message in Persian, Arabic, English and Hebrew.

“The first meeting between [Israeli Prime Minister Naftali] #Bennett and #Biden and the emphasis on using ‘Other Options’ against #Iran, while being an illegal threat to another country, establishes the Islamic Republic of Iran’s right to reciprocal response to ‘Available Options,’” Shamkhani tweeted.

During Bennett and Biden’s meeting in the White House on Friday, the US leader said Iran will “never” get a nuclear weapon, and that though he prefers a diplomatic solution to the nuclear standoff with Tehran, there are “other options” should that fail. Bennet thanked Biden for his comments.

Following the meeting, a senior Israeli official said that the atmosphere in the White House is “not optimistic” about returning to the 2015 nuclear deal with Iran.

President Joe Biden meets with Israeli Prime Minister Naftali Bennett in the Oval Office of the White House, Friday, Aug. 27, 2021, in Washington. (AP Photo/Evan Vucci)

Bennett’s government opposes US efforts to return to the Iran nuclear agreement signed in 2015 by the Obama administration and abandoned three years later by former president Donald Trump. Biden has been seeking a return to the deal, but this has looked increasingly unlikely as Iran has moved further away from its obligations and as a hardline president, Ebrahim Raisi, has taken office in Tehran.

Later pressed on what was meant by other options, White House Press Secretary Jen Psaki declined to elaborate. Israel has been pushing the US to put a “credible military threat” against Iran on the table while negotiating to curb its nuclear efforts.

Biden and his staff surprised their Israeli guests by the attention they gave to the Iranian threat and how important it was to them, the Israeli official said.

During the meeting in the White House, Bennett presented his two-pronged approach to dealing with Iran — confronting its regional activities in a quiet, multi-faceted “gray zone” campaign, and keeping Tehran permanently a year away from nuclear breakout capability.

Iran’s President Ebrahim Raisi speaks before parliament to defend his cabinet selection in the capital Tehran on August 21, 2021. (ATTA KENARE / AFP)

IDF Chief of Staff Aviv Kohavi told reporters this week that the Israeli military is developing fresh plans to strike Iran’s nuclear program in light of the Islamic Republic’s ongoing march toward the technology needed for an atomic weapon.

“The progress in the Iranian nuclear program has led the IDF to speed up its operational plans, and the defense budget that was recently approved is meant to address this,” Kohavi said, speaking to military correspondents ahead of the Jewish New Year.

Defense Minister Benny Gantz issued a similar threat on Wednesday, telling foreign diplomats that Israel may have to take military action against Iran.

“The State of Israel has the means to act and will not hesitate to do so. I do not rule out the possibility that Israel will have to take action in the future in order to prevent a nuclear Iran,” Gantz said.

“Iran is only two months away from acquiring the materials necessary for a nuclear weapon. We do not know if the Iranian regime will be willing to sign an agreement and come back to the negotiation table and the international community must build a viable ‘Plan B’ in order to stop Iran in its tracks towards a nuclear weapon,” he added.

Though Iran is believed to be two months away from obtaining the fissile material needed for a bomb, the IDF has assessed that it would take at least several more months from then before Tehran would be capable of producing a deliverable weapon, needing that time to construct a core, perform tests and install the device inside a missile.

Lazar Berman and Judah Ari Gross contributed to this report.