Nuclear deal renegotiation talk "meaningless": Rouhani

Iranian president Hassan Rouhani said on Tuesday that he was optimistic about the future of the nuclear deal Tehran signed with world powers, and said that US President-elect Trump cannot unilaterally cancel the accord."The president elect has shown he is not happy about the nuclear deal, calling it the worst deal ever signed. This is only propaganda. I don't think he can do much when he goes to the White House," Rouhani said in a news conference on the anniversary of lifting of international sanctions against Iran."I am optimistic about the future of the nuclear deal... the deal is good for the United States but he doesn't understand," Rouhani said in comments broadcast live on state television.