A pariah state
is one whose conduct is considered to be out line with international norms
of behavior. This term is closely related to the term rogue state
defines pariah states as those characterized by "...precarious diplomatic isolation, the absence of assured, credible security support or political moorings within big-power alliance structures, and ... [being] the targets of obsessive and unrelenting opprobrium and censure within international forums such as the United Nations
." As there is no definitive definition of a pariah state, the term has been applied to different states at different times, and is often a designation made for political purposes. Today the term is most often used to describe states that support terrorism
and pursue the development of weapons of mass destruction
in violation of international agreements.
At various times in the past, the following states have been labeled as pariahs in the international system: