The greatest victory in sports history came when Muhammad Ali knocked out George Foreman to win back the world heavyweight championship boxing title in 1974. Foreman duly unloaded his relentless bombs on Ali, who spent most of the time leaning on the ropes, soaking up the fearsomely powerful assault. Nobody could understand this apparently suicidal rope-a-dope strategy other than Ali himself, who had deliberately planned it to exhaust his opponent. The Greatest didn’t win because he was the stronger man. He won because he had the smarter tactics, and the courage to execute them. Donald Trump is the political equivalent...