I found this article on BBC News very interesting. Just a quick summary of the "rogue states" as defined by G.W Bush and his buddies.
I didn't know that:
"Most analysts no longer consider Libya to be a threat."
And this is funny:
US Undersecretary of State John Bolton has described the ruler, Kim Jong-il, as "a dictator".
In return, North Korea called him "human scum".