Democrats said U.S. Sen. Joseph Lieberman (news, bio, voting record)'s defeat in a party vote underscored anger over the Iraq war but the Bush administration countered that it exposed the party's weakness on national security. The White House weighed in on Wednesday with unusual vigor on a Democratic primary after Lieberman, a three-term senator and vice presidential nominee in 2000, was brought down by voter anger for his support of the war and what his challenger called excessive coziness with President George W. Bush. Winner Ned Lamont had cast Tuesday's race with Lieberman for the Democratic Senate nomination as a...