Cuban group Ska Cubano performs at the 2005 Nobel Peace Prize Concert in Oslo December 11, 2005, paying homage to this year's [Nobel Peace Prize laureate Mohamed ElBaradei, director general of the International Atomic Energy Agency (IAEA). U.N. nuclear watchdog IAEA and its leader Mohamed ElBaradei won the 2005 Nobel Peace Prize for their efforts to limit the spread of atomic weapons.]