Oslo Is in Nobel Limbo, Waiting for Peace Prize Winner Machado  Bloomberg.comOslo appearance by Nobel peace prize winner María Corina Machado cancelled  The GuardianWho is Danny Ocean, the pop star playing at the Nobel Peace Prize ceremony?  NPRNobel Institute calls off Machado press conference ahead of Peace Prize ceremony  ReutersNobel Institute calls off Machado press conference ahead of award ceremony  Al Jazeera