Ex-secretary of State predicts a gradual reduction in troops to start in 2006, but says there will be a military presence for a long time. LONDON — Former Secretary of State Colin L. Powell said in an interview to be broadcast today that the United States would have a military presence in Iraq for years, although a gradual withdrawal probably would start in 2006. In the interview with the British Broadcasting Corp., Powell said a massive, rapid pullout would be a "tragic He also said U.S. intelligence services had not revealed their doubts to the Bush administration about the reliability...