Radiological warfare is any form of warfare involving deliberate radiation poisoning or contamination of an area with radiological sources.

Radiological weapons are normally considered[by whom?] weapons of mass destruction (WMDs), although radiological weapons can be specific in who they target, such as the radiation poisoning of Alexander Litvinenko by the Russian FSB, using radioactive polonium-210.[1]

Numerous countries have expressed an interest in radiological weapons programs, several have actively pursued them, and three have performed radiological weapons tests.[2]