It's a pretty nasty radical Islamist group
Al Queda related? Saddam related? Probably, but that appears subject to debate. What is definitely true is that these people are terrorists and need to get whacked.
US targets Islamist group in Iraq
“Both the US administration and the Kurds accuse the movement of being linked to Osama Bin Laden's al-Qaeda network.
Ansar commanders deny this - and accusations that they have links with the Baghdad government."