<P> As of October 2015, there are 153 state parties to the convention plus the European Atomic Energy Community . Bulgaria, Hungary, Mongolia, Poland, and Russia have denounced the convention after having ratified it . </P> <P> The United States Department of State says that: </P> <P> The Convention on the Physical Protection of Nuclear Material provides for certain levels of physical protection during international transport of nuclear material . It also establishes a general framework for cooperation among states in the protection, recovery, and return of stolen nuclear material . Further, the Convention lists certain serious offenses involving nuclear material which state parties are to make punishable and for which offenders shall be subject to a system of extradition or submission for prosecution . </P>

1980 convention on the physical protection of nuclear material