In an hours-long speech at the University of Havana, Fidel Castro defiantly blasted President Bush, derided the CIA's belief that he has Parkinson's and likened himself to El Cid. Fidel Castro said he would step down if he became too ill to govern but he insisted he feels ''better than ever,'' a day after The Herald reported that the CIA is convinced he suffers from Parkinson's disease. In an hours-long speech broadcast live on Thursday night on Cuban state television to commemorate the 60th anniversary of his entering the University of Havana, the 79-year-old blasted President Bush and the CIA...