WASHINGTON – Crusty and unapologetic, Donald H. Rumsfeld is the public face of an unpopular war and a target of unrelenting criticism. A growing number of commanders who served under him say he has botched the Iraq operation, ignored the advice of his generals and should be replaced. The White House insists the defense secretary retains President Bush's confidence. Few close to the administration expect him to be shown the door. “The president believes Secretary Rumsfeld is doing a very fine job during a challenging period in our nation's history,” Bush spokesman Scott McClellan said Thursday as the administration circled...