As early as December 1945, politicians worried about the possibility of smuggling nuclear weapons into the United States, though this was still in the context of a battle betw… See more

Nuclear weapons may be acquired by non-state organisations such as terrorist groups via purchase or theft, either in whole or in part, from state entities. State involvement may be eith… See more

Unlike state-level use of nuclear weapons, retaliation is not likely to deter terrorist groups from the use of nuclear weapons, so the doctrine of mutually assured destruction… See more

Nuclear weapons materials on the black market are a global concern, and there is concern about the possible detonation of a small, crude nuclear weapon by a militant groupin a … See more

Information reported to the International Atomic Energy Agency (IAEA) shows "a persistent problem with the illicit trafficking in nuclear and other radioactive materials, thefts, loss… See more