The U.S. and Russian academies convened a workshop in 2003 for sharing best practices in nuclear materials protection, control, and accounting (MPC&A), including the status and application of remote monitoring technologies, personnel issues, and both national and international safeguards worldwide. The goals of the workshop were to identify areas in which the United States and Russia can promote best practices in MPC&A globally and expand U.S.-Russian cooperation on nuclear non-proliferation. The papers presented in the workshop and the outcomes of workshop discussions form the basis for this workshop summary.