Bunn, MatthewMalin, MartinRoth, NickolasTobey, William2014-05-162014Bunn, Matthew G.,Martin B. Malin, Nickolas Roth, and William H. Tobey. 2014 Advancing Nuclear Security: Evaluating Progress and Setting New Goals (Cambridge, Mass.: The Project on Managing the Atom, Belfer Center for Science and International Affairs, Harvard University, March 2014).http://nrs.harvard.edu/urn-3:HUL.InstRepos:12200459The threat of nuclear and radiological terrorism has not disappeared, though the world has made important progress in reducing these risks. Urgent new steps are needed to build effective and lasting nuclear security worldwide. The nuclear security effort must now shift from short-term improvements toward a focus on a continued search for excellence, lasting as long as terrorist groups bent on mass destruction and the nuclear and radiological materials they might use both continue to exist.en-USnuclear securityResearch Paper or Report2014-05-16