"With only 1.8m people and the world's largest output of diamonds, it has been a model of stability, avoiding the violence, corruption and boom-and-bust cycles that have plagued so many mineral-rich countries. Yet it had little going for it at independence in 1966."
"When historians look back on his presidency, they may well judge him most on whether he managed to bring the emerging powers into the world order..... By the time Mr Obama leaves office,..... powers like China, India and Brazil will surely have taken larger roles in the world economy."