Why Trump’s tariff threats are a perilous game for all of us

Xi Jinping and Donald Trump in Beijing, 2017

President Trump is engaged in protracted trade battles with friends and foes alike to pursue American interests. What if it worked? Ultimately, the question of the means is as important — if not more — than the end result. Nothing less than our future is at stake.

“Does the end justify the means?” This question has long been a staple of politics, in particular…