Trump’s blunder in Syria is irreparable

UNTIL NOW, it was possible to hope that the damage caused by President Trump’s terrible incompetence, ignorance and impulsivity in foreign policy was largely theoretical, and possibly reparable. That is no longer true. The cost of his latest Syria blunder is unfolding before our eyes: Innocent lives lost. U.S. servicemen and -women betrayed. Butchering dictators emboldened. Dangerous terrorists set free. A ghastly scene is playing out, and it almost surely will get worse.

How often have Mr. Trump and his Republican enablers in Congress berated President Barack Obama for allowing...