Nonproliferation and Terrorism Studies (NPTS) Professor and Program Chair Jeff Knopf has published a new academic journal article. Titled “After diffusion: Challenges to enforcing nonproliferation and disarmament norms,” the article has been posted online by Contemporary Security Policy. The article is part of a special issue on Nuclear Norms in Global Governance. This special issue was co-edited by NPTS professor Avner Cohen and Maria Rost Rublee from Monash University in Australia. The special issue grew out of a workshop that was held at MIIS, supported by a grant from the U.S. Institute of Peace.