48 critical hours for diplomacy; New version proposed in Tehran CBS quoted an informed source: Qatari mediators were present in Tehran on Friday to pass the final amendments to the draft proposal of the end of the American war against Iran to the Iranian side. This source reported seeing signs of progress in the negotiations. MARGARET BRENNAN, CBS CORRESPONDENT: Qatari mediators are in Tehran with the latest version of the diplomatic proposal, and the next 48 hours will be very crucial to decide on it. Hossein Mousbian: It is better if Tehran accepts Vance's offer; From the beginning he was against the war against Iran and worked for the understanding of Islamabad. According to Mosavian, it is better to hold the new round of negotiations before the American elections. Kahramanpour: Iran does not have the element of "covert work" which is one of the prerequisites for progressing to develop nuclear weapons. Friedrich Mertz, Chancellor of Germany: Berlin is trying to end the Iran war as soon as possible. The sum of these positions indicates that alongside the continuation of Qatar's negotiations, a new version of the diplomatic proposal has been placed on Tehran's table, and the coming days could be decisive for clarifying the path of negotiations.