chinese side, you see a very big qualitative improvement. thatare developing -- numerical buildup is not quite as visible, but it is ongoing. so we have two nuclear adversaries, with much more modern nuclear arsenals than we do. isleast one of them exploring concepts that could be very dangerous in a time of crisis because it might actually lead to someone deciding they could use some of these weapons in a way that would be below the threshold that would necessitate the u.s. response. >> the area that your report holds out as the number one issue we're dealing with. >> right. our judgment was that the commitment of the current administration, which actually builds on previous administration's commitment to modernize our nuclear triad is worth sustaining and the findings struck us as reasonable to all of those problems. that thed also add work that china is doing in hypersonic's, what type of weapons will be on those vehicles, that poses problems as far as they are no longer on this easily determined point of origin of where it came from, where did it come from? defensive systems that are optimized against ballistic missiles, those have to be really wrote. growing to dohat list, if you will. and so