DUBAI (Reuters) -Iran's Supreme Leader Ayatollah Ali Khamenei voiced doubts on Tuesday over whether nuclear talks with the United States will lead to an agreement, Mehr news reported, as Tehran reviews a proposal to hold a fifth round of negotiations. "I don't think nuclear talks with the U.S. will be bring results. I don't know," Khamenei said during a speech in remembrance of Iran's late President Ebrahim Raisi. (Reporting by Dubai Newsroom; Editing by Hugh Lawson)
