of mastering those problems you just laid out. >> right. i mean, certainly the ability to create all of that within a -- you know, within the country is a huge, huge deal. you know, being able to marshal all of that fissal material into one place is a huge undertaking. the sanctions and the effort to cap imports into the country is going to sort of stop that. that said, i think there is some help to -- there's something to be understood here from knowing that it would take, you know, everything that country has to probably put together one or two or three of those weapons. we're not at all clear yet that they can do the things that america, chinese, french and other nuclear programs can do, which is not just put the thing into space, have a nuclear device on board, but then also create all the sophisticated decoys that would come off it,