But in his speech on Thursday in Salt Lake City -- the first in a series to commemorate the Sept. 11 anniversary -- he picked up on an approach that Gen. John P. Abizaid , Vice President Dick Cheney and others have refined in the past few months : a warning that defeat in Iraq will only move the battle elsewhere , threatening allies in the Middle East and eventually , Mr. Bush insisted , Americans '' in the streets of our own cities . '' ''