Trump’s Losing Hand

What, exactly, has America gained from Donald Trump’s war in Iran?

The president says the goal is to prevent Iran from obtaining a nuclear weapon—a threat Americans have been hearing about for decades. Yet U.S. intelligence assessed that Iran had not reauthorized a nuclear weapons program. Its enrichment activities remained a serious concern, but that is not the same as an imminent bomb.

Meanwhile, the costs of war are real. Iran has used threats and attacks to disrupt shipping through the Strait of Hormuz, rattling energy markets and global commerce. The United States has spent vast quantities of munitions, raising concerns among allies about American readiness should China threaten Taiwan.

And China? It has suffered from the disruption, too. But it also has an opportunity to expand its influence in the Middle East and present itself as a more dependable partner while Washington looks increasingly erratic.

Trump loves to talk about who has the cards. So let’s look at the table: Iran can threaten a vital shipping route. China sees an opening to gain influence. And America is paying for another war while its allies question its judgment.

Some deal, Mr. President.