FALLUJAH, Iraq - The U.S. military extended a cease-fire for Fallujah on Sunday for at least two more days, backing down from warnings of an all-out Marine assault and announcing that American and Iraqi forces would begin joint patrols in the city. The patrols are to begin as early as Tuesday, and Fallujah officials will announce in the city that anyone seen carrying a weapon will be considered hostile. Meanwhile, a U.S. general told The Associated Press that troops will move into a base on the edge of the holy city of Najaf to be abandoned by Spanish troops when...