When Charles de Gaulle became French President in late 1958 he wanted to end French–Israeli nuclear cooperation and said that he would not supply Israel with uranium unless the plant was opened to international inspectors, declared peaceful, and no plutonium was reprocessed.[56] Through an extended series of negotiations, Shimon Peres finally reached a compromise with Foreign Minister Maurice Couve de Murville over two years later, in which French companies would be able to continue to fulfill their contract obligations and Israel would declare the project peaceful.[57] Due to this, French assistance did not end until 1966.[58] However, the supply of uranium fuel was stopped earlier, in 1963.[59] Despite this, a French uranium company based in Gabon may have sold Israel uranium in 1965. The US government launched an investigation but was unable to determine if such a sale had taken place.[60]
1963 standoff between Israel and United States
Israeli newspaper Haaretz reported in 2019 that, throughout the spring and summer of 1963, the leaders of the United States and Israel – President John F. Kennedy and prime ministers David Ben-Gurion and Levi Eshkol – were engaged in a high-stakes battle of wills over Israel's nuclear program. The tensions were invisible to the publics of both countries, and only a few senior officials, on both sides, were aware of the severity of the situation. According to Yuval Ne'eman, Eshkol, Ben-Gurion's successor, and his associates saw Kennedy as presenting Israel with a real ultimatum. According to Ne'eman, the former Israel Air Force commander Maj. Gen. (res.) Dan Tolkowsky, seriously entertained the fear that Kennedy might send U.S. airborne troops to Dimona, the home of Israel's nuclear complex.[61]
On March 25, 1963, President Kennedy and CIA Director John A. McCone discussed the Israeli nuclear program. According to McCone, Kennedy raised the "question of Israel acquiring nuclear capability," and McCone provided Kennedy with Kent's estimate of the anticipated negative consequences of Israeli nuclearization. According to McCone, Kennedy then instructed National Security Adviser McGeorge Bundy to guide Secretary of State Dean Rusk, in collaboration with the CIA director and the AEC chairman, to submit a proposal "as to how some form of international or bilateral U.S. safeguards could be instituted to protect against the contingency mentioned." That also meant that the "next informal inspection of the Israeli reactor complex [must] …be undertaken promptly and... be as thorough as possible."[61]
On April 2, 1963, Ambassador Barbour met Prime Minister Ben-Gurion and presented the American request for his "assent to semi-annual visits to Dimona perhaps in May and November, with full access to all parts and instruments in the facility, by qualified U.S. scientists." Ben-Gurion, apparently taken by surprise, responded by saying the issue would have to be postponed until after Passover, which that year ended on April 15. To highlight the point further, two days later, Assistant Secretary Talbot summoned Israeli Ambassador Harman to the State Department and presented him with a diplomatic démarche on the inspections. This message to Ben-Gurion was the first salvo in what would become "the toughest American-Israeli confrontation over the Israeli nuclear program".[61]
On April 26, 1963, more than three weeks after the original U.S. demand concerning Dimona, Ben-Gurion responded to Kennedy with a seven-page letter that focused on broad issues of Israeli security and regional stability. Claiming that Israel faced an unprecedented threat, Ben-Gurion invoked the specter of "another Holocaust," and insisted that Israel's security should be protected by joint external security guarantees, to be extended by the U.S. and the Soviet Union. Kennedy, however, was determined not to let Ben-Gurion change the subject. On May 4, 1963, he replied to the prime minister, assuring him that while "we are watching closely current developments in the Arab world," as to Ben-Gurion's proposal for a joint superpower declaration, Kennedy dismissed both its practicality and its political wisdom. Kennedy was much less worried about an "early Arab attack" than he was by "a successful development of advanced offensive systems which, as you say, could not be dealt with by presently available means."[61]
Kennedy would not budge on Dimona, and the disagreements became a "pain in the neck" for him, as Robert Komer later wrote. The confrontation with Israel escalated when the State Department transmitted Kennedy's latest letter to the Tel Aviv embassy on June 15 for immediate delivery to Ben-Gurion by Ambassador Barbour. In the letter Kennedy fleshed out his insistence on biannual visits with a set of detailed technical conditions. The letter was akin to an ultimatum: If the U.S. government could not obtain "reliable information" on the state of the Dimona project, Washington's "commitment to and support of Israel" could be "seriously jeopardized." But the letter was never presented to Ben-Gurion. The telegram with Kennedy's letter arrived in Tel Aviv on Saturday, June 15, the day before Ben-Gurion's announcement of his resignation, a decision that stunned his country and the world. Ben-Gurion never explained, in writing or orally, what led him to resign, beyond citing "personal reasons." He denied that his move was related to any specific policy issues, but the question of the extent to which Kennedy's Dimona pressure played a role remains open to discussion to the present day.[61]
On July 5, less than 10 days after Levi Eshkol succeeded Ben-Gurion as prime minister, Ambassador Barbour delivered to him a first letter from President Kennedy. The letter was virtually a copy of the undelivered letter of June 15 to Ben-Gurion.[62] As Yuval Ne'eman stated, it was immediately apparent to Eshkol and his advisers that Kennedy's demands were akin to an ultimatum, and thus constituted a crisis in the making. A stunned Eshkol, in his first and interim response, on July 17, requested more time to study the subject and for consultations. The premier noted that while he hoped that U.S-Israeli friendship would grow under his watch, "Israel would do what it had to do for its national security and to safeguard its sovereign rights." Barbour, apparently wanting to mitigate the bluntness of the letter, assured Eshkol that Kennedy's statement was "factual": Critics of strong U.S.-Israel relations might complicate the diplomatic relationship if Dimona was left uninspected.[61]
On August 19, after six weeks of consultations that generated at least eight different drafts, Eshkol handed Barbour his written reply to Kennedy's demands. It began by reiterating Ben-Gurion's past assurances that Dimona's purpose was peaceful. As to Kennedy's request, Eshkol wrote that given the special relationship between the two countries, he had decided to allow regular visits of U.S. representatives to the Dimona site. On the specific issue of the schedule, Eshkol suggested – as Ben-Gurion had in his last letter to Kennedy – that late 1963 would be the time for the first visit: By then, he wrote, "the French group will have handed the reactor over to us and it will be undertaking general tests and measurements of its physical parameters at zero power."[61]
Eshkol was vague on the proposed frequency of visits. Eshkol disregarded Kennedy's demand for biannual tours, while avoiding a frontal challenge to Kennedy's request. "Having considered this request, I believe we shall be able to reach agreement on the future schedule of visits," Eshkol wrote. In sum, the prime minister split the difference: To end the confrontation, he assented to "regular visits" by U.S. scientists, but he did not accept the idea of the prompt visit that Kennedy wanted and avoided making an explicit commitment to biannual inspections. Kennedy's appreciative reply did not mention these divergences but assumed a basic agreement on "regular visits."[61]
In the wake of Eshkol's letter, the first of the long-sought regular inspection visits to Dimona took place in mid-January 1964, two months after Kennedy's assassination. The Israelis told the American visitors that the reactor had gone critical only a few weeks earlier, but that claim was not accurate. Israel acknowledged years later that the Dimona reactor became operational in mid-1963, as the Kennedy administration had originally assumed.[61]
It turned out that Kennedy's insistence on biannual visits to Dimona was not implemented after his death. U.S. government officials remained interested in such a schedule, and President Lyndon B. Johnson did raise the issue with Eshkol, but he never pressed hard on the subject the way that Kennedy had.[61]
In the end, the confrontation between President Kennedy and two Israeli prime ministers resulted in a series of six American inspections of the Dimona nuclear complex, once a year between 1964 and 1969. They were never conducted under the strict conditions Kennedy laid out in his letters. While Kennedy's successor remained committed to the cause of nuclear nonproliferation and supported American inspection visits at Dimona, he was much less concerned about holding the Israelis to Kennedy's terms. In retrospect, this change of attitude may have saved the Israeli nuclear program.[61]
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