Leon Panetta replaces Robert Gates at Secretary of Defense. Gates had led the Defense Department since December 2006, serving both President George W. Bush and President Barack Obama. Panetta previously was Director of Central Intelligence.
America faces the most severe security environment seen since World War II, and U.S. military leaders are working aggressively to develop new strategies, operational concepts, and technologies in response. As these efforts advance, it is imperative that new ideas and...