>> very tough, andrea. very, we have been involved in trying to ensure that this deal survives because it is one which all of our governments negotiated in good faith and we think it does represent the best way of ensuring that iran does not get nuclear weapons. but if the iranians decide to walk away from the deal or to cheat, which we very much hope they will not do because they have implemented to the letter the interim agreement, then we are going to be very serious about snapping back the sanctions. the provisions are very clear in the agreement and of course there are extensive monitoring processes in that agreement and in the other iaea and other obligations that iran will have. so is this thing absolutely perfect? no. is it as good as we can get and do we think it does close off the route to iran getting nuclear weapons? yes. and we will be very, very rigorous in policing it. >> just briefly, hillary clinton called on the u.n. to have an international conference at the u.n. meetings this september on the migrant crisis. the u.k. has not stepped up the