This file photo shows 2011 Nobel Peace Prize laureates, Ellen Johnson Sirleaf, Leymah Gbowee and Tawakkol Karman attending the Nobel Peace Prize award ceremony at the City Hall in Oslo, last December.... more 

This file photo shows 2011 Nobel Peace Prize laureates, Ellen Johnson Sirleaf, Leymah Gbowee and Tawakkol Karman attending the Nobel Peace Prize award ceremony at the City Hall in Oslo, last December. The Norwegian Nobel Committee that awards the prize had 231 individuals and organisations on its top-secret list, with the 2012 laureate to be revealed in Oslo at 11:00am (0900 GMT) less