United Nations Secretary General Ban Ki-moon is urging Iraqi leaders to address the root causes for a surge of bloodshed in the country. Al-Qaeda linked militants have seized control of two key cities. More violence between minority Sunnis and the Shi'ite-led government has killed thousands over the last 9 months. Mr. Ban made an unannounced visit to Baghdad Monday for talks with Prime Minister Nouri al-Maliki. _________________________ 联合国秘书长潘基文敦促伊拉克领导人从根源上解决国内大规模流血冲突的原因.与基地组织有联系的武装分子获得了两座关键城市的控制权.九个月以来,少数族裔的逊尼派教徒与控制政府的什叶派教徒之间的大规模暴力冲突造成数千人死亡.潘基文周一突然造访巴格达与总理努里`马利基举行会谈.____________________