A few thoughts from Zenit:
Military Intervention in Iraq and International Law
War Must Never Be Allowed to Divide World Religions, Says Pope
Caritas-Iraq Asking Help for 260,000 War Refugees
On Peace and Penitence: "the conquest of peace at all levels is joined to conversion of heart and a genuine change of life."

And an perceptive metaphor:
Embolisms in the Body Of Christ: "In this case, the embolisms are the obstacles to communion: when forgiveness is not given, when there are chronic enmities ..., bitterness, disdain, anger, slander, malice," he said.