Danish prime minister Helle Thorning-Schmidt poses for a 'selfie' with David Cameron and Barack Obama at the Nelson Mandela memorial service, while Michelle Obama looks on. Photograph: Roberto Schmidt/AFP/Getty When Danish prime minister Helle Thorning-Schmidt took a "selfie" on her smartphone last. The cabinet of Prime Minister Helle Thorning-Schmidt was the cabinet government of Denmark from 3 October to 3 February It was a coalition between the Social Democrats, the Danish Social Liberal Party and the Socialist People's Party. Helle Thorning-Schmidt, the Danish prime minister, has become an internet sensation after she took a ‘selfie’ of herself with President Barack Obama and David Cameron at the Nelson Mandela memorial on Tuesday.