The Obama administration mounted a new argument Monday for why skeptical lawmakers and U.S. allies should back the preliminary nuclear agreement with Iran, calling it a “forever agreement” that would block all pathways to a nuclear weapon and set up tough international inspections with no end date.
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Energy Secretary Ernest Moniz, in a rare appearance at the White House press briefing, used that term in defending the deal he helped strike in Switzerland.

“I want to say this is not an agreement for 10 years or 15 years or 20 years. It is a long-term agreement with a whole set of phases,” he said. “And if Iran earns over this time period trust and confidence in their peaceful objectives, well then over time the constraints will, in phases, ease up, but never get lower than the additional protocol and all of the access that it provides.