Juan Cole gives us some useful context for this latest bombing at Abu Ghraib:

The NYT reports that a suicide bomber killed 33 persons and wounded over 60 at Abu Ghraib, striking at a meeting of tribal sheikhs accompanied by military officers. Seven of the dead were officers, including the commanding officer of the newly opened Abu Ghraib prison, according to al-Hayat writing in Arabic.

Also killed was a commander of the Iraqi military at Muthanna, who had been detailed to the Ministry of the Interior. Al-Hayat says that the meeting was called by a section of the Interior Ministry concerned with outreach to the rural clan leaders, and the sheikhs were meeting with some officers in a search for national reconciliation. It was everything that the Sunni Arab radical guerrillas would not have wanted to see.