By Michelle Cann, Kelsey Davenport and Margaret Balza
The report, published jointly by ACA and PGS, concludes that approximately 80 percent of the 67 national commitments made by 30 global leaders at the 2010 summit in Washington have been completed.
The Seoul Nuclear Security Summit is expected to review states' progress on implementing their commitments and to set the course for future efforts to secure weapons-usable nuclear materials. A third summit is planned for the Netherlands in 2014.