David Letterman has launched a blistering attack on CBS News, accusing the network of losing its integrity and becoming a wreck under its current leadership. Speaking on a podcast, the former Late Show host said the proud history of CBS journalism has been trampled and stripped of its values. Letterman pointed to the legacy of reporters like Ed Murrow, who once risked their lives to report from war zones, and contrasted it with what he sees as a collapse of standards inside the newsroom today. H