Interior Minister Mohsin Naqvi met Iranian Foreign Minister Abbas Araghchi in Tehran on Thursday, as Islamabad intensified its diplomatic efforts to revive stalled peace negotiations between Iran and the United States, sources said.

Pakistan is playing the role of a trusted intermediary, facilitating the exchange of messages between Washington and Tehran over the wording and conditions of a proposed ceasefire document, Iran’s Foreign Ministry spokesman Esmaeil Baghaei confirmed.

Several rounds of messages have been exchanged between both sides based on Iran’s original 14-point text, Baghaei told reporters.

“We have now received the American side’s views and are currently reviewing them in detail.”

Naqvi’s visit to Tehran carries significant weight.

Earlier, he held separate meetings with Iranian President Masoud Pezeshkian, Parliament Speaker Mohammad Baqer Qalibaf and Interior Minister Eskandar Momeni, sources said.

Official details of Thursday’s meeting with Araghchi have not yet been made public.

While back-channel diplomacy continues, Iran has simultaneously signalled its military readiness should talks fail.

An Iranian military source, speaking to Russian state news agency RIA Novosti, said Tehran possesses advanced weapons that have not yet been used on the battlefield.

“We have developed advanced weapons domestically that have not yet been deployed in combat,” the official said.

“In terms of military equipment and defence capabilities, we lack nothing that would prevent us from defending our country.”

The official also issued a direct warning to Washington.

“This time, we have no intention of showing any patience or restraint,” he said.