[U.S. Presidential Envoy: Reaching an Agreement with Iran is Impossible, Relevant Meetings are Unproductive] BlockBeats News, March 3, according to Fox News: U.S. Presidential Envoy Wittecoff stated that Iranian authorities insist they have the right to enrich uranium under international agreements. Reaching an agreement with Iran is impossible, and he described meetings with Iranian officials as unproductive. (Jin10)