In a four-part special series, News War, FRONTLINE examines the political, cultural, legal, and economic forces challenging the news media today and how the press has reacted in turn. Through interviews with key figures in print, broadcast and electronic media over the past four decades -- and with unequaled, behind-the-scenes access to some of today's most important news organizations, FRONTLINE traces the recent history of American journalism, from the Nixon administration's attacks on the media to the post-Watergate popularity of the press, to the new challenges presented by the war on terror and other global forces now changing -- and challenging -- the role of the press in our society.