Today, the nature of nuclear threats is far different than 50 years ago, said Adam N. Stulberg, codirector of the Center for International Strategy, Technology and Policy (CISTP) in Georgia Tech's Sam Nunn School of International. There are more nuclear players with "different idiosyncracies," Stulberg said. Nations or organizations that might have crude arsenals or "that don't subscribe to the established rules and norms" present different challenges to arms control verification, monitoring, and diplomacy. Source: Science Magazine October 26, 2012