Trilateral negotiations between Tehran, Beijing and Muscat The correspondent of the "Al-Mayadeen" network in Beijing, quoting an Asian source, reported that these days there are trilateral negotiations between Iran, Oman and China. "A senior official in Iran's Foreign Ministry participated in the closed tripartite meeting that included the foreign ministers of China and Oman, as well as the Iranian ambassador," said the source, speaking on condition of anonymity. The report states: "The Sultan of Oman's visit to Beijing was not merely ceremonial, and bilateral relations were of secondary importance. The priority of this trip was to discuss Oman's new mediation between Tehran and Washington with China's full economic and security guarantees.