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Virtually any industrialized nation today has the technical capability to develop nuclear weapons within several years if the decision to do so were made. Nations already possessing substantial nuclear technology and arms industries could do so in no more than a year or two, perhaps even as fast as a few months or weeks, if they so decided to. The larger industrial nations (Japan and Germany for example) could, within several years of deciding to do so, build arsenals rivaling those of the states that already have nuclear weapons. This list below mentions some notable capabilities possessed by certain states that could potentially be turned to the development of nuclear arsenals. This list represents only strong nuclear capability, not the political will to develop weapons. All of the listed countries have signed the Nuclear Non-Proliferation Treaty.
* Canada Canada - Canada has a well developed nuclear technology base, large uranium reserves and markets reactors for civilian use. While Canada has the technological capabilities to develop nuclear weapons, there is no hard evidence it has done so, nor has Canada ever shown the intention to join the nuclear club outright, although rumors that Prime Minister John Diefenbaker had developed nuclear weapons are still present. Canada has been an important contributor of both expertise and raw materials to the American program in the past, and had even helped with the Manhattan Project. In 1959, NATO proposed to Canada that the RCAF assume a nuclear strike role in Europe. Thus in 1962 six Canadian CF-104 squadrons based in Europe were formed into the RCAF Nuclear Strike Force armed with B28 nuclear bombs (originally Mk 28) under the NATO nuclear weapons sharing program; the Force was disbanded in 1972 when Canada opted out of the nuclear strike role. Canada accepted having American W-40 nuclear warheads under dual key control on Canadian soil in 1963 to be used on the Canadian BOMARC missiles. The Canadian air force also maintained a stockpile of AIR-2 Genie unguided nuclear air-to-air rockets as the primary wartime weapon on the CF-101 Voodoo all-weather interceptor after 1965. Prime Minister Pierre Trudeau declared Canada would be a nuclear weapon-free country in 1971, and the last American warheads were withdrawn in 1984. Canada also produces the renowned CANDU reactor and has sold the technology to several countries, including China, South Korea, India, Romania, Argentina, and Pakistan. However there is no credible evidence that CANDU reactors were used to breed weapons grade material for either India and Pakistan. Canada nevertheless cut-off nuclear trade with those two countries after they detonated nuclear weapons.
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