all you have to do is look at iraq in 1991. they also in south africa when south africa wouldn't talk about the history they couldn't verify it. they learned the hard way that history does matter if you are going to build a credible verification regime. on the pmds it is circumvectwhat we have seen is issues about calculations related to nuclear weapons. there was a recent sanctioning of iranian entity by the u.s. government where they said it was started in 2011. it involves work that is related to nuclear weapons. so i think the view is actually appearing to me fairly wide spread that there is ongoing concerns about what some of the people are doing that were in this pre-2004 program. >> i think that pnd is important