career diplomat frank wisner in new york.e was ambassador to india, egypt and the philippines and is currently an analyst at the iran project, a think tank that supports the iran nuclear deal. thank you for joining us on dw. how optimistic are you that these indications will point the way to reviving the nuclear deal? >> the news today is good news. but i don't discount how complex the negotiation will be, and how long it wi take. i believe it does, however, provide an opportunity for the sides to come together and achieve a goal set up some weeks ago for the united states to return to the jcpoa on a compliance-four-compance basis. --ompliance-for-compliance basis. that is, the u.s. returns to the deal when trump took it out of it -- took us out of it, and the iranians rollback efforts to enhance nuclear capability. and there is at least a road ahead. but the choreography of the steps will become located. clare: i do want to ask you about that, because one of the challenges is that both the u.s. and iran want the other side t