Iran’s Nuclear Efforts Pose Growing Threat to Its Foes Despite Setbacks

Friday’s killing of one of Iran’s most important nuclear scientists has dealt a setback to the country’s nuclear program, which had staged a partial rebound after the 2015 nuclear deal brokered under President Obama unraveled.

Yet, the U.S. and its allies still face major hurdles in trying to constrain Tehran’s nuclear ambitions, current and former officials said. The challenge is likely to be particularly acute for President-elect Joe Biden, who is planning to engage Iran diplomatically in the hope of negotiating restoring and building on the 2015 deal.

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