King Salman did not mention Trump's successor by name. But he will have known that his words were being heard by the future resident of the White House. Biden made repeated and detailed statements on Iran ahead of the elections. He also often spoke of the requirements of US allies. "[W]e will continue to push back against Iran's destabilizing activities, which threaten our friends and partners in the region," he wrote in an op-ed on CNN in September of this year. "But I am ready to walk the path of diplomacy if Iran takes steps to show it is ready too,” he wrote.