From trolling Canada about a lake to suddenly talking about Kim Jong-un, US President Donald Trump’s recent distractions speak louder than words. The former reality television star has long been known for his reliance upon a simple tactic: when you don’t like what’s being said, change the conversation. But the 80-year-old’s recent stunts appear to be even more targeted than usual at wrestling the news away from the Iran war and the economy as difficult midterm elections loom in November. “This...