(FILE PHOTO) In this composite image a comparison has been made between US President Barack Obama (L) and Chuck Hagel. Obama will reportedly nominate former Republican Senator Chuck Hagel for Defense Secretary replacing Defense Secretary Leon Panetta. ***LEFT IMAGE*** WASHINGTON, DC - DECEMBER 28: U.S. President Barack Obama said he was "modestly optimistic" while making a statement on fiscal cliff negotiations following a meeting with Congressional leaders at the White House December 28, 2012 in Washington, DC. Obama and members of Congress continue to seek a solution to avert the possibility of large tax increases combined with deep spending cuts also known as the "fiscal cliff". (Photo by Win McNamee/Getty Images) ***RIGHT IMAGE*** OMAHA, NE- MARCH 12: U.S. Sen. Chuck Hagel (R-NE) speaks at the University of Nebraska-Omaha March 12, 2007 in Omaha, Nebraska. Hagel announced that he will postpone making a decision on whether to seek the Republican nomination for president until later this year. (Photo by Eric Francis/Getty Images)
