then use their knowledge and their other resources to reverse engineer the information. it's not certain, though, they'll be able to do this. but it is very possible. and let me tell you how this works because i've watched the russians do it before. it russians may identify, for example, if it's a human source who that human source is, approach that human source and say, look, we know you are working for x country or whatever, you're spying on isis. well, we're going to compmizia to isis and you'll bedead or you can work for us. and so that source, if it's a human source, begins to work for russia as well as trying to stay safe. it gets very complicated. but the big picture is ultimately we lose control through our allies of an important stream of intel. and that puts americans at risk. >> but shouldn't americans care about that, even? >> well, of course they should, don, like many things.