When Is Good News Not?

When I first read this, I thought it was nice to see someone in Iraq reaching a political solution. Then I saw who the players are:

DUBAI (Reuters) - An Iraqi militant group said on Wednesday it has reached a ceasefire deal with Iraq's wing of al Qaeda to end clashes between the two Sunni insurgent groups waging a violent campaign against U.S.-led forces in
Iraq.

"A deal has been reached between the Islamic Army in Iraq and al Qaeda in Iraq that stipulates an immediate end to all military operation between the two sides in all sectors including capture operation," the Islamis Army in Iraq said in a statement on a Web site used by militants including al Qaeda.

I wonder what unifies them?