The first quadrilateral meeting in Tehran ended with Iran, Pakistan, Turkey and Saudi Arabia agreeing to continue the talks after the Tehran meeting; Agreement to continue through regional cooperation At their first joint meeting in Tehran, Iran, Pakistan, Turkey and Saudi Arabia agreed to continue talks to strengthen cooperation, including in the area of peace and security in the region; A preliminary but important result that enables follow-up of consultations beyond the meeting. The first quadrilateral meeting on regional security and stability was held on Monday, November 4, 1405, equivalent to October 26, 2026, under the chairmanship of Mohsen Razai, Secretary of the Supreme National Security Council, in Tehran. Click to continue news.