The Art of the Nuclear Deal

Mr. Hennigan writes about national security, foreign policy and conflict for Times Opinion.

If President Trump has maintained any consistency in his Iran policy over the years, it’s his conviction that the theocratic regime in Tehran should never be allowed to develop a nuclear weapon.

He ran for president three times on that principle. As commander in chief, he has ordered two complex military operations that aimed to eliminate Iran’s nuclear program. Now he’s hoping his diplomatic team will be able to finally hammer out a deal at a second round of talks in Pakistan to curb Tehran’s nuclear ambitions for decades to come.

It’s an admirable goal. Restricting........

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