Listening to U.S. and Arab negotiators recount inside details of their long, zigzag bargaining with Iran over the past five months, I have the sense that the framework announced Sunday isn’t the end of this story but an intermediate step—one that could ultimately prove a dismal failure or, the Trump administration hopes, the start of an extraordinary transformation toward a modern Iran. Let’s be frank: In diplomatic terms, this agreement is an exit ramp from a costly and unpopular war, not a