It's a very important question, because whereas most of the complex threats emanated at one point from nation states, from states that could build it, some of it now could migrate to less capable nations, or even groups, as you mentioned.
For weapons of mass destruction, including chemical weapons, biological weapons, and nuclear devices, we track very closely who produces those and where they could be proliferated, in what other parts of the world. We do that with others to make sure....