March 28, 2004 -- (Reuters) - Sensing a threat to President Bush's re-election, his national security adviser Condoleezza Rice will step into the arena where her former aide first made incendiary charges that Bush ignored pre-Sept. 11 warnings about al Qaeda. Rice will be interviewed on CBS's"60 Minutes" -- the influential television news program where counterterrorism expert Richard Clarke a week ago accused Bush of mishandling the terror threat.