Russia says US threats on Iran nuclear sites 'illegal and unacceptable'

The deliberations come as Trump has repeatedly expressed his preference for a nuclear deal with Iran but warned that a failure to reach one within a timeframe he has set could lead to military action. The exact start date of Trump's reported two-month deadline to Iran remains unclear.

The consideration of indirect talks follows Iran's formal response to a letter sent by Trump to Supreme Leader Ali Khamenei in March. Iran rejected direct US talks as well as negotiating over its missile program and its support for armed regional groups, which the US has insisted must be part of any discussions.

While Trump had proposed direct negotiations, Iran has reportedly agreed only to indirect discussions mediated by Oman, which has previously played a mediating role between the two nations.

The US officials cited by Axios added that the Trump administration believes direct talks would be more effective but is not dismissing the Iranian proposal or Oman's potential role as mediator.

"After the exchange of letters, we are now exploring next steps in order to begin conversations and trust building with the Iranians," one of the US officials told Axios, emphasizing that no final decision has been made and internal discussions are ongoing.

More than one year of indirect talks with the Biden administration failed to produce an agreement. Those who believe Tehran might be playing for time see its demand for Omani mediation as a tactic to drag out negotiations until the end of the Trump administration.

Sources indicate an internal debate within the White House, with some officials believing a negotiated agreement is still possible, while others view further talks as futile and advocate for military strikes against Iran's nuclear facilities.

In a parallel move, the Pentagon is undertaking a substantial buildup of forces in the Middle East. The deployment would provide Trump with readily available military capabilities should he decide diplomatic efforts have failed.

The diplomatic maneuvering occurs against a backdrop of escalating rhetoric between Washington and Tehran.

Trump recently threatened to bomb Iran if a deal is not reached, prompting a sharp response from Khamenei, who warned of a "heavy blow in return" if Iran were attacked.

Iran has also lodged a formal protest via the Swiss embassy, which represents US interests in Iran, vowing a "decisive and immediate" response to any threat.

Tensions are further fueled by Iran's increased uranium enrichment, bringing it closer to becoming a nuclear threshold state, although Tehran maintains it does not seek nuclear weapons.

The Pentagon confirmed on Tuesday the deployment of additional troops and air assets to the region, with two aircraft carriers, the Truman and Vinson, remaining in the area.

Last week, B-2 stealth bombers were sent to the Diego Garcia military base in the Indian Ocean, a move a US official indicated was linked to Trump's deadline.

"Should Iran or its proxies threaten American personnel and interests in the region, the US will take decisive action to defend our people," Pentagon spokesperson Sean Parnell said in a statement.

US President Donald Trump said on Sunday that Iran would face bombing if it did not agree to a new nuclear deal, prompting a senior advisor to Iran's Supreme Leader Ali Khamenei to moot the pursuit of a bomb in the event of an attack.

The Republican Study Committee (RSC) in a press conference advocated a series of new acts it said would increase pressure on Tehran in line with Trump's policy of stepping up sanctions in a bid to force the Islamic Republic to the negotiating table.

It named ten proposed pieces of legislation including the Free Iraq from Iran Act, Stop Corrupt Iranian Oligarchs and Entities Act and the No Sanctions Relief for Terrorists Act.

"This package is the strongest Iran sanctions and security package delivered to date.
The Iranian people are not the target," Congressman August Pfluger of Texas told reporters.

"It's the leadership that wants to gain a nuclear weapon and wants to continue that pariah state of sowing chaos and terrorism throughout the world," he added. "If I were them, I would make the choice of announcing loud and clear that they will not attain a nuclear weapon."

The US director of national intelligence Tulsi Gabbard said last week that Washington assessed Iran is not building nuclear weapons but that a taboo in Iran on discussing nuclear weapons in public was eroding.

The RSC is a conservative caucus for house Republicans founded in 1973.

"Right now, Tehran has a very clear offering, and that's to enter into negotiations in good faith with President Trump, who has laid out not only a roadmap for the Persian Farsi people to be successful, but for Iran to have a future," Representative Zach Nunn of Iowa said.

"It simply means stop funding terrorism, stop avoiding the sanctions regime, come to the table, de-escalate and end a nuclear regime that only ends in death for potentially hundreds of thousands of people in the Middle East."

Trump told NBC News on Sunday that if a deal was not reached, "there will be bombing — and it will be bombing the likes of which they have never seen before." Khamenei vowed retaliation to any attack.

An attack, a veteran nuclear negotiator and advisor to the Supreme Leader said on Monday, would push Iran toward acquiring nuclear weapons to ensure its defense,

Tehran denies seeking nuclear weapons and Khamenei has issued a religious injunction against them, but the United Nations nuclear watchdog says Iran has enriched more uranium than any state lacking a bomb.

"Not only are they pursuing a nuclear weapon to vaporize Israel and ultimately the United States, they're developing ICBMs, which can only be for one purpose, and that is to deliver a nuclear attack against the American people," Representative Joe Wilson of South Carolina said.

"And there must be verification, not the charades we've had with the previous administrations."

Trump withdrew from a 2015 international nuclear agreement with Iran in his first term after bashing it as too lenient. Khamenei said talks were pointless if a new deal could easily be broken.

The US military has deployed long range bombers at a strategic Indian Ocean airbase, a spokesperson told Iran International last week, a move which presaged major bombing campaigns against Afghanistan in 2001 and Iraq in 2003.

Iran’s threats have also included the far-fetched idea of targeting the US base at Diego Garcia in the Indian Ocean—a claim dismissed by military analysts, who argue that Iran lacks the capability to strike such distant targets. Still, Iran’s defense doctrine is rooted in asymmetrical warfare, and its commanders have often warned they could strike in unexpected ways.

Following Khamenei’s sharp response to Trump’s threat, Iran’s air force commander Amir Ali Hajizadeh noted that there are dozens of US targets within close range in the Persian Gulf region.

As tensions rose further, senior Khamenei adviser Ali Larijani suggested that Trump’s threats could push Iran toward building nuclear weapons. That message was quickly echoed by hardline MP Ahmad Naderi, a member of the parliament’s presidium, who argued that nuclear weapons have secured North Korea’s safety—and questioned why Iran should not follow the same path.

Larijani’s statement, however, carried a different weight. He has long been seen as a measured political figure—unlike the more impulsive military commanders or obscure ultraconservative lawmakers. As speaker of Iran’s parliament (Majles) for 12 years and one of the key architects of the 2015 nuclear deal with the West, Larijani played a central role in shaping Iran’s diplomacy. Hardliners still recall, often with resentment, how he pushed the JCPOA agreement through a predominantly hardline parliament in just 20 minutes.

At the same time, Larijani is a US-educated politician and a former IRGC officer, trusted by Khamenei both for his background and his lineage—he is the son of one of Iran’s highest-ranking clerics. He once oversaw Tehran’s nuclear file and only stepped down as Secretary of the Supreme National Security Council due to a personality clash with ultraconservative former President Mahmoud Ahmadinejad.

By allowing someone like Larijani to voice support for building nuclear weapons, Khamenei revealed one of the key complexities of Iranian politics. He is signaling to both Trump and the Iranian public that pressure to pursue the bomb is coming not just from hardline agitators in parliament, but also from figures seen as moderate and pragmatic. In doing so, he effectively sidelines his much-publicized fatwa banning nuclear weapons—though few ever believed it was an absolute or irreversible stance.

At the same time, Larijani’s statement—as a politician who often echoes Khamenei’s broader policy positions—renders previous threats about Iran leaving the Non-Proliferation Treaty (NPT) largely redundant. Once a country openly talks about building a nuclear bomb, it effectively signals its departure from the NPT, regardless of any formal announcement.

In a commentary on Larijani’s statement, Nour News—a media outlet affiliated with Iran’s Supreme National Security Council—wrote on Tuesday that Trump’s talk of bombing Iran has triggered serious concerns about national security. According to the commentary, this growing anxiety could shift public opinion in favor of changing Iran’s nuclear policy. It added that the United States should be held accountable for accelerating Iran’s potential turn toward developing nuclear weapons.

Nour News quoted Larijani as warning that any US or Israeli military strike aimed at ending Iran’s nuclear program could instead push Tehran toward the very path it has so far avoided.

The outlet also claimed that with the backing of Russia and China, Iran is no longer isolated on the international stage. Echoing Larijani’s remarks, it suggested that Yemen is now capable of responding to US aggression in ways that would prove costly for Washington and its allies.

According to Nour News, “The United States now faces two choices: either continue its hostile behavior and drag the region into an unprecedented security crisis, or change course to ease rising tensions.” The commentary added that Trump’s threats risk further complicating the situation, noting that “Iran has many options to defend its national security.” It concluded by stating that “Iran’s final decision will depend on future US actions.”

Meanwhile, Larijani’s brother-in-law, Ali Motahari, told the press that “there is nothing wrong with negotiating with the United States.” He went further, saying that “President Massoud Pezeshkian should have accepted Trump’s offer to negotiate”—though he did not mention that Pezeshkian lacked Khamenei’s approval to do so at the time.

"Threats are indeed being heard, ultimatums are also being heard," Russian Deputy Foreign Minister Sergei Ryabkov told the Russian journal International Affairs in an interview on Tuesday.

"We consider such methods inappropriate, we condemn them, we consider them a way for (the United States) to impose its own will on the Iranian side," he added.

Trump on Sunday warned that Iran could face bombing and secondary tariffs if a nuclear deal was not reached with Washington.

Ryabkov warned that a US strike on Iran, particularly targeting its nuclear infrastructure, could have catastrophic consequences for the entire region.

"There is still time, and the 'train has not left the station' yet. We must intensify efforts to reach a reasonable agreement," Ryabkov said. "Russia is ready to offer its services to Washington, Tehran and all parties interested in resolving this issue."

Kremlin spokesman Dmitry Peskov also said last month that Russian President Vladimir Putin had agreed to mediate nuclear talks between Washington and Tehran.

China also expressed concerns on Tuesday, with Ministry of Foreign Affairs spokesperson Guo Jiakun saying that the Iranian nuclear issue should be resolved through diplomatic means.

"China maintains that resolving the Iranian nuclear issue through political and diplomatic means is the only right option and that new consensus needs to be reached," Jiakun said in response to a reporter's question about Trump's threats against Iran during a press briefing.

"The US needs to show political sincerity and resume talks as soon as possible. Slapping sanctions, pressuring, and threatening with the use of force will lead nowhere,” he added.

Earlier in March, an Emirati official brought a letter from Trump proposing nuclear talks with Tehran, which the Islamic Republic's Supreme Leader Ali Khamenei rejected, saying such a proposal was deception from Washington amid crippling sanctions on Iran.

Iran officially responded to a letter last Wednesday seeking a nuclear deal. While Iran has rejected direct negotiations with the United States, Iran's President Masoud Pezeshkian said indirect talks can continue, adding that Ali Khamenei's response to Trump’s letter was delivered to the US contact in Oman.

Ahmad Naderi, a representative for Tehran, made his comments in a post on X, echoing sentiments expressed by some Iranian hardliners after threats from US President Donald Trump that Iran would be bombed if it does not agree to a nuclear deal.

"Observing the behavior and words of Trump during his first presidential term with North Korea shows that having an atomic bomb has brought security for Korea," Naderi wrote.

During his 2017-2021 presidency, Donald Trump held three meetings with North Korean leader Kim Jong Un, in Singapore, Hanoi, and at the Korean border, the first time a sitting US president had set foot in the country.

Reuters reported in November that Trump's team was discussing pursuing direct talks with North Korean leader Kim Jong Un, hoping a fresh diplomatic push could lower the risks of armed conflict.

Naderi, who was sanctioned by the European Union in 2010 for designing a plan to respond to the European Union in case the Revolutionary Guards were included in the terrorism list, added, "For a long time now, many of the country's and the revolution's elite and concerned individuals have been requesting the testing and announcement of a [atomic] bomb."

In a direct response to Trump, he added, "If we were also armed with an atomic bomb, Trump would not dare to threaten bombing."

On Monday, Ali Larijani, a veteran nuclear negotiator and advisor to Supreme Leader Ali Khamenei, suggested that such threats from the US could push Iran towards acquiring nuclear weapons for self-defense, noting that public pressure for such a move would likely increase.

In October, a group of lawmakers called on Iran's Supreme National Security Council to review the country's defense doctrine and consider adopting nuclear weapons as the risk of escalation with Israel also continues to grow. Last year the two archenemies engaging in direct aerial attacks as the once long-time shadow war came to a head.

The MPs argue that Khamenei can reconsider his religious ban on nuclear weapons on the grounds that the circumstances have changed.

While Iran denies seeking nuclear weapons and Supreme Leader Khamenei has issued a religious decree against them, recent statements from political figures and lawmakers indicate a growing debate within Iran about its nuclear policy in the face of perceived external threats.

The UN's nuclear watchdog reports that Iran has enriched more uranium than any state without nuclear weapons.

In February, the Wall Street Journal reported that Iran has "sharply increased its stockpile of highly enriched uranium in recent weeks, according to a confidential United Nations report, as Tehran amasses a critical raw material for atomic weapons."

According to the report, it said that the increase in Iran’s holdings of uranium enriched to 60%, or nearly weapons grade, gives it enough to produce six nuclear weapons.