Britain secretly supplied the 20 tonnes of heavy water to Israel nearly half a century ago which enabled it to make nuclear weapons, according to Whitehall documents which have been discovered at the Public Records Office.
Officials in the Macmillan government deliberately concealed the deal from the United States, according to the files, which were discovered by BBC Newsnight and broadcast on Wednesday night.
Historians and politicians have been startled by the discovery, which sheds new light on the process by which Israel was able to circumvent attempts to restrict membership of the ”nuclear club” to the great powers.
Most of those involved are now dead, but Lord (Ian) Gilmour, who was active in Conservative politics during that era, said on Wednesday night: ”I would have been astonished and found it absolutely unbelievable.” He said he did not believe Harold Macmillan or his ministers knew anything about the sale, which Britain permitted without demanding safeguards against military use.
”They’ve gone out of their way to do it without safeguards,” he said. ”One would have thought that any reasonably educated civil servant wouldn’t have dreamed of doing anything like this without consulting a minister but as far as I can see they didn’t.”
A nuclear specialist, Frank Barnaby, said: ”I had no idea at all the British were involved.”
The sale, in two successive 10-tonne shipments to Israel from a British port, went to Israel’s secret underground reactor at Dimona in the Negev desert.
Barnaby said the deal appeared ”rather foolhardy” and added: ”I would have thought a cautious government would have in no way been seen to be doing anything to help the Israeli nuclear programme.”
The primary motive for the sale, according to the documents, appeared to be commercial. The British atomic energy authority was able to get rid of a consignment of heavy water worth £1,5-million, or £20-million in today’s prices, which it had bought from Norway but no longer had a use for.
The deal was structured as a resale to Norway, which then traded the consignment on to Israel. This enabled British officials to say they had no responsibility themselves for imposing safeguards.
But, according to the documents, the deal was concealed from the US, which was hostile to proliferation, because the Eisenhower administration might have insisted on unacceptable conditions which would have scuppered the sale.
When Robert McNamara became the US defence secretary in 1961, he and President Kennedy strived to stop Israel from going on to build nuclear weapons. He told Newsnight on Wednesday night that he had never known of Britain’s behaviour at the time.
”The fact Israel was trying to develop a nuclear bomb should not have come as a surprise but that Britain should have supplied it with heavy water was indeed a surprise to me,” he said.
”It’s very surprising to me that we weren’t told because we shared information about the nuclear bomb very closely with the British.”
The origins of the heavy water used in the Dimona reactor remained almost entirely unknown until the revelations of Mordechai Vanunu, a disaffected Dimona technician, in the 1980s.
It was disclosed then that the 20 tonnes originated from Norway. But Norway itself continued to remain silent about the true nature of the deal.
Heavy water, made by a laborious electrolysis process, is so called because it contains extra neutrons. It was a crucial element of the kind of basic nuclear reactor then being built by Israel with French help, which used natural uranium rather than the more advanced technology involving enriched uranium fuel. – Guardian Unlimited Â