. >>> frank hoffman is a true military international. ns us today to talk about great books that have come out of ndu and give us some summer reading tips. frank is a retired marine lieutenant colonel who was a senior navy civilian before taking his post. frank, welcome back. >> great to be here and with your readers. >> talk to us about some of the great books that you guys have had come out recently. >> national defense university the hottest book we have right now is called convergence and deals with elicit networks and eenergying -- an emerging national security threat. he was introduced to these nexus of transnational criminal organizations and terrorist organizations coming together and then when he went to european command where -- he was surprised to see the same kind of threat so this book describes this emergent national security threat and the directions it's going and kind of inner agency -- >> what are some of the key ideas that the book fosters because there's been obviously a big drive to interconnect government better to h