Cyril Ramaphosa must have prepped for an awkward meeting. After all, just a week earlier the Trump administration chartered a Boeing 767 to fly 59 Afrikaner farmers out of his country so they could claim refugee status amid allegations that the white population faced a genocide. But he may not have reckoned with Donald Trump’s sense of theatre. “Turn the lights down and just put this on,” he directed his aides in the Oval Office. “It’s right behind you.” Ministers, reporters, two of the greatest golfers of all time, and the world’s richest man craned their necks to watch as...