Of course not. His campaign manager, David Plouffe, admits here that the pledged 16-month withdrawal is actually a "best-case scenario," and nothing really could be decided until March 2008 depending on the situation on the ground. "He will, of course, not rely on some plan that he’s crafted as a presidential candidate or a U.S. Senator."
I suppose a candidate whose campaign admits that he does not mean what he says could be considered an improvement over the status quo.
