After 18 years and almost a trillion dollars to fight the Taliban, Afghanistan\u2019s government still struggles for legitimacy; we ask why. A list of the world\u2019s ultra-rich reveals a disproportionate number of self-made female billionaires from China\u2014but the trend isn\u2019t set to continue. And we examine why presidential libraries are so controversial, and why Barack Obama\u2019s is no exception.