Trump’s Trade Heresies Give Him Leverage but Not Necessarily Success

Making demands and extracting concessions is just one part of the negotiator’s job

Will President Donald Trump's decision to impose tariffs on steel and aluminum for the EU and others cause U.S. allies to retaliate? The Wall Street Journal's Gerald F. Seib explains. Photo: Getty

WASHINGTON—President Donald Trump’s approach to trade is often counterproductive because he alienates rather than cultivates allies, uniting them against the U.S. instead of China.

In my column yesterday, I laid out an alternate history in which Mr. Trump forces China to fundamentally change its mercantilist expropriation of foreign companies’ technology and market share. This seems like a stretch given Mr. Trump’s track record to date. On the other hand, it’s a scenario that calls for strengths possessed by Mr. Trump that...