> . Small tactical nukes have been around for at least a > decade and from what I've read (although I don't know for a fact) were first > developed by the Russians.
It doesn't matter who developed them at all. Blaming the Russians if the US use them is daft. It is the uS(supported by UK) who is threatening to use them. Where they come from, who made them, who developed, how long they have been arround are red herrings.