For some twenty years, Teller advised Israel on nuclear matters in general, and on the building of a hydrogen bomb in particular.
%5B66%5D In 1952, Teller and Oppenheimer had a long meeting with
David Ben-Gurion in Tel Aviv, telling him that the best way to accumulate plutonium was to burn natural uranium in a nuclear reactor. Starting in 1964, a connection between Teller and Israel was made by the physicist
Yuval Neeman, who had similar political views. Between 1964 and 1967, Teller visited Israel six times, lecturing at
Tel Aviv University, and advising the chiefs of Israel's scientific-security circle as well as prime ministers and cabinet members.
%5B67%5D
At each of his talks with members of the Israeli security establishment's highest levels, he would make them swear that they would never be tempted into signing the
Nuclear Non-Proliferation Treaty.
%5B68%5D In 1967 when the Israeli nuclear program was nearing completion, Teller informed Neeman that he was going to tell the
CIA that Israel had built nuclear weapons and explain that it was justified by the background of the
Six-Day War.
%5B69%5D After Neeman cleared it with Prime Minister
Levi Eshkol, Teller briefed the head of the CIA's Office of Science and Technology, Carl Duckett.
%5B69%5D It took a year for Teller to convince the CIA that Israel had obtained
nuclear capability; the information then went through CIA Director
Richard Helms and then to the US president at that time,
Lyndon B. Johnson.
%5B69%5D Teller also persuaded them to end the American attempts to inspect the
Negev Nuclear Research Center in Dimona.
%5B69%5D Teller's personal opinion became factual assertion, when in 1976 Carl Duckett testified in
Congress before the
Nuclear Regulatory Commission, that after receiving information from "American scientist", he drafted a
National Intelligence Estimate (NIE) on Israel's nuclear capability.
%5B69%5D
In the 1980s, Teller again visited Israel to advise the
Israeli government on building a nuclear reactor.
%5B70%5D Three decades later, Teller confirmed that it was during his visits that he concluded that Israel was in possession of nuclear weapons.
%5B69%5D After conveying the matter to the U.S. government, Teller reportedly said: "They %5BIsraeli%5D
have it, and they were clever enough to trust their research and not to
test, they know that to test would get them into trouble."
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