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Secretary of State John Kerry said Sunday negotiators deserve “the benefit of the doubt” in attempts to secure a nuclear agreement with Iran, after the White House threatened to veto a bill providing for Congress to approve of any final deal.

Kerry repeated the administration’s position that Iran has lived up to an interim agreement reached in late 2013, known as the Joint Plan of Action (JPOA), and said that as a result of that agreement, “Israel is safer today.”