Russian Foreign Minister Lavrov arrived in Tehran on Monday afternoon (October 19) to meet with senior Iranian officials to discuss the war with the United States and efforts to end the conflict. A day earlier, while Lavrov was in Bahrain for the strategic dialogue between Russia and the Gulf Cooperation Council (GCC), GCC members urged Russia to use its influence over Tehran to promote "serious dialogue" and restore shipping in the Strait of Hormuz, which has been severely disrupted by attacks on commercial vessels. Lavrov also expressed support for the Memorandum of Understanding (MoU) signed by the US and Iran in June as a framework for de-escalation, and called for the establishment of a regional "collective security" architecture to restore maritime traffic and achieve lasting peace.