Ali Larijani says efforts to get a framework for negotiations are advancing, as a US naval deployment in the Gulf fuels concerns.

Iran’s top security official has said progress is being made towards negotiations with the United States, even as the Iranian foreign minister again accused Washington of raising tensions between the two countries.

Ali Larijani, the head of Iran’s Supreme National Security Council, said in a social media post on Saturday that, “unlike the artificial media war atmosphere, the formation of a structure for negotiations is progressing”.

Larijani’s post did not provide further details about the purported framework for talks.

Tensions have been rising between Iran and the US for weeks amid US President Donald Trump’s repeated threats to attack the country over a crackdown on recent antigovernment protests, and his push to curtail the Iranian nuclear programme.

The Trump administration has also deployed a naval “armada” to Iran, led by the USS Abraham Lincoln aircraft carrier, escalating fears of a possible military confrontation.

Senior Iranian leaders have said they are open to negotiations with Washington, but only once Trump stops threatening to attack the country.

Earlier this week, Trump said the US vessels being sent to Iran were ready to use “violence, if necessary” if Iran refused to sit down for talks on its nuclear programme.

US Central Command (CENTCOM) also warned Iran’s Islamic Revolutionary Guard Corps (IRGC) on Friday over its plans to hold a two-day naval exercise in the Strait of Hormuz, a Gulf maritime passage that is critical to global trade.

“Any unsafe and unprofessional behavior near US forces, regional partners or commercial vessels increases risks of collision, escalation, and destabilization,” CENTCOM said in a statement.

Iranian Minister of Foreign Affairs Abbas Araghchi hit back on Saturday, saying in a social media post that the US military, operating off Iran’s shores, “is now attempting to dictate how our Powerful Armed Forces should conduct target practice on their own turf”.

“CENTCOM is also requesting ‘professionalism’ from a national military the U.S. Government has listed as a ‘terrorist organization’, all while recognizing the right of that same ‘terrorist organization’ to conduct military drills!” Araghchi wrote.

The US designated the IRGC, an elite branch of the Iranian military, as a “terrorist” organisation in 2019, during Trump’s first term in office.

Araghchi added, “The presence of outside forces in our region has always caused the exact opposite of what is declared: promoting escalation instead of de-escalation”.

Reporting from the Iranian capital, Tehran, Al Jazeera’s Tohid Asadi said the situation remains “quite fragile and delicate” amid the US military buildup in the region.

Still, he said that Saturday’s statement by Larijani, the Iranian security official, about progress being made on efforts to hold negotiations was a “positive” sign.

“Diplomatic [efforts] are [on]going,” Asadi said, noting that senior Iranian officials have held talks with allies in recent days amid a push to prevent a confrontation between Washington and Tehran.

The Qatari Ministry of Foreign Affairs said Prime Minister Sheikh Mohammed bin Abdulrahman bin Jassim Al Thani met with Larajani in Tehran on Saturday to discuss “efforts to de-escalate tensions in the region”.

Sheikh Mohammed reiterated Qatar’s “support for all efforts aimed at reducing tensions and achieving peaceful solutions that enhance security and stability in the region”, the ministry said of the talks in a statement.

“He also stressed the need for concerted efforts to spare the peoples of the region the consequences of escalation and to continue coordination with brotherly and friendly countries to address differences through diplomatic means,” the statement added.