Samuel R."Sandy" Berger, a former White House national security adviser, plans to plead guilty to a misdemeanor, and will acknowledge intentionally removing and destroying copies of a classified document about the Clinton administration's record on terrorism. Berger's plea agreement, which was described yesterday by his advisers and was confirmed by Justice Department officials, will have one of former president Bill Clinton's most influential advisers and one of the Democratic Party's leading foreign policy advisers in a federal court this afternoon. The deal's terms make clear that Berger spoke falsely last summer in public claims that in 2003 he twice inadvertently...