NOT SO FAST

Key Element in Iran Deal Uncertain

Don’t take out the party hats, the Iran nuclear deal is not finalized yet. The interim six-month pact will temporarily freeze much of Iran’s nuclear-weapons production, but U.S. Secretary of State John Kerry acknowledged Sunday that enforcing the agreement could be more difficult than reaching it in the first place. “The next phase, let me be clear, will be even more difficult, and we need to be honest about it,” he said. Kerry and the rest of the world powers hope the interim agreement will keep Iran’s nuclear program in check for the next month while staving off harsh new sanctions—and until a longer-term deal can be hammered out.