...has given an additional unknown number of nuclear warhead tipped missiles which Israel could launch at any time against their neighbors
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DIA Estimate For Israeli Nuclear WeaponsIsrael has not confirmed that it has nuclear weapons and officially maintains that it will not be the first country to introduce nuclear weapons into the Middle East. Yet the existence of Israeli nuclear weapons is a "public secret" by now due to the declassification of large numbers of formerly highly classified US government documents which show that the United States by 1975 was convinced that Israel had nuclear weapons.
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CIA estimates of the Israeli arsenal's size did not improve with time. In 1974, Duckett estimated that Israel had between ten and twenty nuclear weapons. The upper bound was derived from CIA speculation regarding the number of possible Israeli targets, and not from any specific intelligence. Because this target list was presumed to be relatively static, this remained the official American estimate until the early 1980s.
The actual size and composition of Israel's nuclear stockpile is uncertain and the subject of many - often conflicting - estimates and reports. It is widely reported that Israel had two bombs in 1967, and that Prime Minister Eshkol ordered them armed in Israel's first nuclear alert during the Six-Day War. It is also reported that, fearing defeat in the October 1973 Yom Kippur War, the Israelis assembled 13 twenty-kiloton atomic bombs.
Israel could potentially have produced a few dozen nuclear warheads in the period 1970-1980, and is thought to have produced sufficient fissile material to build 100 to 200 warheads by the mid-1990s. In 1986 descriptions and photographs of Israeli nuclear warheads were published in the London Sunday Times of a purported underground bomb factory at the Dimona nuclear reactor. The photographs were taken by Mordechai Vanunu, a dismissed Israeli nuclear technician. His information led some experts to conclude that Israel had a stockpile of 100 to 200 nuclear devices at that time.
By the late 1990s the U.S. Intelligence Community estimated that Israel possessed between 75-130 weapons, based on production estimates. The stockpile would certainly include warheads for mobile Jericho-1 and Jericho-2 missiles, as well as bombs for Israeli aircraft, and may include other tactical nuclear weapons of various types. Some published estimates even claimed that Israel might have as many as 400 nuclear weapons by the late 1990s. We believe these numbers are exaggerated, and that Israel's nuclear weapons inventory may include less than 100 nuclear weapons. Stockpiled plutonium could be used to build additional weapons if so decided.
Excerpt from 160-page secret DIA report, first disclosed and reproduced in Rowan Scarborough, Rumsfeld's War (Regnery, 2004), pp. 194-223.
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http://www.fas.org/nuke/guide/israel/nuke/index.html