A high-level Pakistani delegation led by Chief of Army Staff and Chief of Defence Forces Field Marshal Syed Asim Munir arrived in Tehran on Wednesday, as Islamabad intensified efforts to mediate between the United States and Iran.

According to the Inter-Services Public Relations (ISPR), Interior Minister Mohsin Naqvi is also part of the delegation. The visit is aimed at advancing diplomatic engagement and easing regional tensions.

The delegation was received by Iranian Foreign Minister Abbas Araghchi.

Sources said that the delegation is expected to discuss the possible next phase of negotiations.

Sources indicate a second round of US-Iran talks is likely to be held in Islamabad by the end of next week, with authorities directed to finalise security and administrative arrangements.

The expected US delegation may include Vice President JD Vance, special envoy Steve Witkoff, and Jared Kushner. Iran is expected to be represented by Parliament Speaker Mohammad Bagher Ghalibaf and Foreign Minister Araghchi.

The diplomatic push follows recent talks in Islamabad that lasted over 20 hours but ended without agreement, as both sides remained divided on key issues including Iran’s nuclear and missile programmes, the Strait of Hormuz, and US sanctions.

The conflict, which began on February 28 with a joint US-Israel campaign against Iran, escalated rapidly, disrupting regional stability and global energy routes.

A temporary two-week ceasefire was announced on April 8 after efforts led by Prime Minister Shehbaz Sharif, who also invited both sides to Islamabad for dialogue.

Despite the lack of a breakthrough, Islamabad has continued backchannel diplomacy.

An Iranian foreign ministry spokesperson confirmed that Tehran and Washington are exchanging messages through Pakistan, underlining its growing role as a key intermediary.