Davos ( CNN ) -- Selfie is the word du jour , and it became cause celebre at Nelson Mandela 's funeral when the Danish Prime Minister Helle Thorning-Schmidt took a selfie with U.S. President Barack Obama and UK Prime Minister David Cameron . But there is no easy way to ask serious-minded men and women who hold high office , and who have matters of state on their mind , `` do you mind if I take a quick selfie ? '' To be sure , they know what it is and may even have engaged in selfie-ing themselves . But in the grand world of Davos , it is perhaps unseemly to be seen taking selfies . Which is why I decided the selfie challenge was such a good idea . Who would and who would not agree to the selfie ? Out of consideration for their feelings I am not revealing who refused . Nor will I show you the selfie of the central banker that is best left in my iPhone . No , what is here are the good and the great that said yes . And to be honest , most seem to enjoy it anyway . The Royalty . ( Ok , not exactly royalty in the traditional sense . ) The international leaders . With Ban Ki-Moon , the U.N. Secretary-General , and Christine Lagarde , head of the International Monetary Fund . The politicians . Top row from left : Tony Blair , former UK Prime Minister , George Osborne , the UK Chancellor and Boris Johnson , the Mayor of London . Bottom row from left : Benjamin Netanyahu , Israel 's Prime Minister , Alex Stubb , Finnish Minister for European Affairs , and Pierre Moscovici , Finance Minister of France . The business executives . From left : Bob Dudley , chief executive of BP , Christophe de Margerie , chief executive of Total S.A. , Christopher J. Nassetta , who heads Hilton Worldwide , and Jacob Frenkel , chair of JPMorgan Chase International . The colleagues . With World Business Today anchor Nina dos Santos . And here 's executive producer Penny Manis with her selfie , featuring U.S. Secretary of State John Kerry -- or is it a photobomb ? See Richard Quest 's full selfie collection below : . Davos 2014 : Compete coverage .
Selfie is the word du jour and became a cause celebre during Nelson Mandela 's presidency . Quest decided to embark on a selfie challenge in Davos , at the World Economic Forum . Here is the challenge -- and a guest appearance from executive producer Rob Marshall .