Alarmed at the prospect of further instability in the region, Saudi Arabia's 89-year-old King Salman bin Abdulaziz dispatched his son, Prince Khalid bin Salman, with the warning destined for Iran's Supreme Leader Ayatollah Ali Khamenei, according to two Gulf sources close to government circles and two Iranian officials.

Present at the closed-door meeting in Tehran, which took place on April 17 in the presidential compound, were Iranian President Masoud Pezeshkian, armed forces Chief of Staff Mohammad Bagheri and Foreign Minister Abbas Araqchi, the sources said.

While media covered the 37-year-old prince's visit, the content of the King Salman's covert message has not been previously reported.

Prince Khalid, who was Saudi ambassador to Washington during Trump's first term, warned Iranian officials that the U.S. leader has little patience for drawn-out negotiations, according to the four sources.

Trump had unexpectedly announced just over a week earlier that direct talks were taking place with Tehran, aimed at curbing Iran's nuclear programme in return for sanctions relief. He did so in the presence of Israeli Prime Minister Benjamin Netanyahu, who had travelled to Washington hoping instead to win support for attacks on Iranian nuclear sites.

In Tehran, Prince Khalid told the group of senior Iranian officials that Trump's team would want to reach a deal quickly, and the window for diplomacy would close fast, according to the four sources.

The Saudi minister said it would be better to reach a deal with the U.S. than face the possibility of an Israeli attack if the talks broke down, according to the two Gulf sources.

He argued that the region - already riven by recent conflicts in Gaza and Lebanon - could not withstand a further escalation in tensions, said the two Gulf sources and one senior foreign diplomat familiar with the discussions.

Authorities in Saudi Arabia and Iran did not respond to requests for comment.

The visit by Prince Khalid - the younger brother of Crown Prince Mohamed Bin Salman - was the first by a senior member of the Saudi royal family to Iran in more than two decades. Riyadh and Tehran had long been bitter rivals, often backing opposing sides in proxy wars, until a rapprochement brokered by China in 2023 helped to ease the tensions and restored diplomatic ties.

Over the past two years, Iran's regional position has been undermined by heavy military blows inflicted by Israel on its allies Hamas in Gaza and Hezbollah in Lebanon, and toppling of its close ally, Syrian dictator Bashar al-Assad. Western sanctions, meanwhile, have hit its oil-dependent economy hard.

Mohanad Hage Ali, an expert on Iran at the Carnegie Middle East Center think tank in Beirut, said that Tehran's weakness had offered Saudi Arabia the opportunity to exert its diplomatic influence, seeking to avoid a regional conflagration.

"They want to avoid war because war and confrontation with Iran will have negative implications on them and their economic vision and ambitions," he told Reuters.

IRAN WANTS A DEAL

Reuters was unable to determine the impact of the prince's message on Iran's leadership.

In the meeting, Pezeshkian responded that Iran wanted a deal to ease economic pressure through the lifting of Western sanctions, the four sources said.

However, the Iranian officials, the sources added, expressed concerns over the Trump administration's "unpredictable" approach to negotiations — which have veered from allowing limited uranium enrichment to demanding the complete dismantling of Tehran's enrichment program.

Trump also has threatened to use military force if diplomacy fails to rein in the clerical establishment's nuclear ambitions.

One of the Iranian sources said that Pezeshkian emphasized Tehran's eagerness to reach a deal but that Iran was not willing to sacrifice its enrichment program just because Trump wanted an agreement.

The ongoing talks between Washington and Tehran have already been through five rounds to resolve the decades-long nuclear dispute, but multiple stumbling blocks remain, including the key issue of enrichment.

Reuters reported on Wednesday that Iran might pause uranium enrichment if the U.S. releases its frozen funds and recognises its right to refine uranium for civilian use under a "political deal" that could lead to a broader nuclear accord, according to two Iranian sources familiar with the talks. The semi-official Fars news agency in Iran quoted a foreign ministry spokesman denying the report.

The White House did not directly address Reuters' questions about whether it was aware of the Saudi warning to Iran.

"President Trump has made it clear: make a deal, or face grave consequences, and the whole world is clearly taking him seriously, as they should," White House press secretary Karoline Leavitt said in a statement.

Trump said on Wednesday he warned Netanyahu last week not to take any actions that could disrupt nuclear talks with Iran, and said the two sides were "very close to a solution now".

Israeli authorities did not respond to a request for comment.

HIGH STAKES

A four-day visit by Trump to the Gulf this month annointed Saudi Arabia as the most prominent member of a new axis of Sunni states in the Middle East, filling the void left by Iran's shattered alliance. During the trip, Saudi Crown Prince Mohamed Bin Salman mediated a reconciliation between Trump and Syria's new Sunni leader, Ahmed al-Sharaa.

Tehran's regional sway, meanwhile, has been diminished by military setbacks suffered by Iran and its allies in the Shi'ite-dominated Axis of Resistance, which include Hamas, Hezbollah, the Houthis in Yemen, and Iraqi militias

In the meeting, Prince Khalid urged Iran to rethink its regional policy, noting such a shift would be welcomed, especially by Riyadh, the sources said.

Although he stopped short of directly blaming Iran, the Saudi minister voiced concern over a possible repeat of the 2019 drone attacks on the facilities of state oil company Aramco - attacks the kingdom attributed to Iran and its Houthi allies, despite Tehran's denial.

Iranian officials maintained that while Tehran holds some influence over the Houthis, it does not fully control their actions, the Iranian sources said.

Decades of hostility between the Shi'ite Iran and Saudi Arabia destabilised the Gulf and fuelled regional conflicts from Yemen to Syria. The 2023 detente was driven in part by Saudi Crown Prince Mohammed's economic ambitions and desire for stability, and has led to increased contacts between the governments.

However, neither Saudi Arabia nor other regional powers see Iran as a dependable partner for peace and they fear its actions could jeopardize their ambitions for economic development, diplomats and regional experts say.

Prince Khalid implored the Iranians to avoid actions by them and their allies that might provoke Washington, stressing that Trump's response would likely be more strident than his predecessors, presidents Joe Biden and Barak Obama.

In turn, he assured Tehran that Riyadh would not let its territory or airspace to be used by the United States or Israel for any potential military action against Iran, the sources said.