David Albright, a former weapons inspector and the president of the Institute for Science and International Security, said the document does not explicitly acknowledge that Iran has a right to enrich uranium, the process for creating the fuel needed for a peaceful nuclear reactor and also a nuclear weapon. But he also said he was troubled that the language on enrichment was so vague.

“I would have hoped some of the parameters were clarified in the initial deal,” he said. “How many centrifuges are we talking about? Is it 18,000 or 3,000? How long will these limitations last, five years or twenty years?”…

Robert Zarate, the policy director for the Foreign Policy Initiative, a think tank that has supported more sanctions on Iran, said the deal signed in Geneva was dangerous. “We’re another step closer to a nuclear-1914 scenario in the Middle East or elsewhere,” Zarate said. “If we cannot say ‘no’ to Iran — a country, by the way, that’s repeatedly violated the Nuclear Nonproliferation Treaty, international nuclear inspections and U.N. Security Council resolutions — then good luck getting countries who haven’t broken any rules, including some of America’s allies and partners, to refrain from getting enrichment and reprocessing or, perhaps eventually, nuclear weapons.”