In this weekend’s bonus brief DSR Daily Brief Hosts Grant Haver and Chris Cotnoir talk with Joe Cirincione, a nuclear security expert, about the recently released nuclear posture review and what it says about the state of America’s nuclear arsenal and the threat posed by others. What is U.S. nuclear strategy? Why are we spending so much modernizing our infrastructure? How worried should we be about a tactical nuclear weapon? Find out in this thoughtful (and maybe not so brief) conversation.