Iran's chief nuclear negotiator Abbas Araghchi said Wednesday that "problems" remain in nuclear talks with world powers and that there can be no deal without a "framework for the removal of all sanctions".
In a live interview with state television from the talks in Switzerland, Araghchi said that "until we have solutions to all problems we cannot have a comprehensive agreement," naming sanctions and research and development as key stumbling blocks.
He said a joint statement on progress made in recent days would be issued later Wednesday in Lausanne, where the negotiations are taking place.