In the 15 months since he ordered more U.S. troops to Iraq, President Bush said there has been a major strategic shift, with many mainstream Sunnis and Shiites now actively confronting extremists.

• 布什总统称在其向伊拉克派遣增援部队后的这15个月里，战事有了战略性的改变，许多正统的逊尼派和什叶派教徒正积极对抗着极端分子。