US President George W. Bush’s credibility on Iraq has dropped, with a new poll showing more Americans now believe that he misled the public about the threat posed by Iraq in the lead-up to war.  The survey by NBC television and The Wall Street Journal found that 47 percent of registered voters now believe Bush deliberately misled the people to make his case for war in Iraq, while 44 percent think he gave the country the most accurate information he had. In March, a majority of Americans said that Bush had given the most accurate information he had.Full Story