May 18, 1961
Memorandum, by L.D. Battle, Executive Secretary, to McGeorge Bundy, Special Assistant to the President for National Security Affairs, 'American Scientists’ Visit to Israel’s Dimona Reactor'
President Kennedy told the new US ambassador to Israel, Walworth Barbour, that he was concerned about Israel’s insistence on a secret visit as well as the "absence of a 'neutral' scientist" in the visit to Dimona. The State Department took the position that it was better to put up with Ben-Gurion’s "sensitivities" about secrecy than "have no visit" at all