deal any minute. both sides could also walk away from a week of talks with nothing. andrea mitchell is live in lausanne in what could be the final hours of the talks with iranians. andrea the obama administration had been adamant they weren t going to extend this deadline. now they have. based on your conversations there on the ground are they getting any closer to a deal? well they certainly were. they were talking about progress overnight. the president was briefed by the team here. there was a full national security meeting with defense secretary, national security adviser rice, the president all in the situation room, which you know so well in the basement of the white house. a video conference. it was midnight here. john kerry took a break. he was accompanied by the energy secretary, who is a key player here, a nuclear physicist, who along with his iranian counterpart, both from m.i.t. by the way, are the two detail people. this is a highly technical negotiation. and t