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In page Madame Nhu:

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When acting U.S. ambassador William Trueheart warned that development aid might be withheld if the repression orchestrated by the Ngôs continued, Madame Nhu denounced it as blackmail. Nhu and Diệm, fearing a cut in aid, sent Madame Nhu to the United States on a speaking tour. She departed South Vietnam on 9 September 1963 in an expedition that brought widespread international scorn to her family's regime.[1] She had predicted "a triumphant lecture tour".[2] She left on 17 September for the Inter-Parliamentary Union meeting in Yugoslavia, followed by a trip to Italy and possibly to the United States, where she had an invitation to speak before the Overseas Press Club of New York.[citation needed]