Conflict Review: Day 244 The Iranian armed forces must respond to any threat posed by the enemy with an immediate and effective response regardless of geographic limitations, Iran's Supreme Leader, Mujtaba Khamenei, has stated. An Iranian delegation arrived in Qatar to discuss the mediators' proposals on the Islamic Republic's nuclear program, Iranian Foreign Minister Abbas Argachi told Al Jazeera. Iran agreed during the negotiations to shorten the time frame for implementing its plan to open the Strait of Hormuz to two days, he noted. Argachi described the US vice president's message to Iran's leadership as a positive step.