for us. what else do we know? >> well, wolf, this event is going to happen next week and what worries western officials is the symbolism, because it means that iran is making progress in the overall nuclear program, but it is important to put the new development in perspective. the fueling of the nuclear plant in bashir, in the southern part of iran, that in and of itself does not put iran closer to a nuclear weapon. this deal to load up the reactor at bushehir has been in the works for years. in about a week, russians will transport uranium to that nuclear plant and used for civilian power and they will not be enriching uranium, and once that fuel is used, the spent rods will go back to russia to make sure that the iranians don't do anything with it. what concerns officials is that they didn't want iran to make progress on anything nuclear until they answer questions of what they may or may not be doing to produce nuclear weapons and the u.s. does not believe