There were a few serendipitous meetings amongst some of the world's most powerful people at the memorial for Nelson Mandela in Soweto.
We've learnt a lot about the state of world diplomacy, that Barack Obama doesn't mind incurring the wrath of Fox News for shaking hands with Cuba's Raul Castro, and South Africans definitely don't give Jacob Zuma a day off criticism.
Advertisement
But also we learnt that Bono is pals with George Bush, and that the Danish Prime Minister Helle Thorning-Schmidt couldn't resist a selfie with Obama.