Israel ...
http://en.wikipedia.org/wiki/Nuclear_weapons_and_Israelhttp://en.wikipedia.org/wiki/Israel_and_weapons_of_mass_destructionlets not forget South Africa is the only country known to have developed nuclear weapons but removed them from the inventory (prior to handover to an ANC goverment)
i understand the Buccaneer was the delivery aircraft chosen, indeed one airframe was upgraded and fitted out for the role #414 ? (the SA. weapons casing looking very similar to the uk.s 'Red Beard' store)
http://en.wikipedia.org/wiki/South_Africa_and_weapons_of_mass_destructionboth Argentina, Brazil, Australia and even Sweden have all had nuclear weapons programmes historically, the latters air dropped store looking similar to the contempoary US. B.28/43/61 store
http://en.wikipedia.org/wiki/Argentina_and_weapons_of_mass_destructionhttp://en.wikipedia.org/wiki/Brazil_and_weapons_of_mass_destructionhttp://en.wikipedia.org/wiki/Swedish_nuclear_weapon_programi dont think based upon assessments that N.Korea is a nuclear state, smoke and mirrors with the pretence suiting both sides, but what if ...
for 'what if' scenarios, there is always WW2, with Germany, the US. and Japan all having atomic weapons programmes (i stil wonder why the US. never 'tested' the 'Little Boy' weapon ('Trinity' was a test of the Plutonium 'Fat Man' type device)
I cant really see a UK. weapon being designed and deployed during WW2 but speculativly the US. might let us use a one of theirs as a Lancaster load or as part of a hypothetical lend lease B.29 transfer !
cheers, Joe