Political columnist Robert Novak dies at 78; was central figure in Valerie Plame CIA leak caseWASHINGTON — Political columnist Robert Novak, a conservative, pugilistic debater and proud owner of the “Prince of Darkness” moniker, died Tuesday after a battle with brain cancer that was diagnosed in July 2008. He was 78. AP News in BriefObama says he’ll accept Nobel Peace Prize as ‘call to action’ toward peace and prosperity |