Not defeat, but rather how one responds to it, determines “winners†and “losers.†Winners say, “Congratulations.†Losers affirm their designation by barking, “You cheated.†Donald Trump, after uncharacteristic graciousness in defeat Monday night, emerged as himself by accusing Ted Cruz of stealing the Iowa caucuses from him. At least Al Gore could claim he won the popular vote. The Donald lost convincingly to a man down five in the polls entering the contest. But he’s convinced he didn’t lose. Trump, using his preferred means of discourse, tweeted: “The State of Iowa should disqualify Ted Cruz from the most recent election...