Nation

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Wednesday on the NewsHour, President Obama stepped up his full court press against critics of the Iran nuclear deal. Also: GOP candidates prepare to take the debate stage in Cleveland, violent backlash against foreigners living in South Africa, providing generous…

President Obama, in an address denouncing critics of the Iran nuclear agreement, warned that America’s international credibility would be lost if Congress kills the deal. How successful was the president in making his case? Gwen Ifill gets views from Ray…