Joe Biden: The US president has convinced himself that he is the only one who can beat Donald Trump in November's election. Photograph: Haiyun Jiang/The New York Times Hage Geingob died in early February. This was neither a personal tragedy nor a political earthquake. He was 82 and had led a very full life. And the country he ruled, Namibia, has a population roughly half the size of Ireland’s. What was significant about his death was that he was the only serving elected head of government older than Joe Biden. That guttering torch had passed to the American president. The...