Well, * if you were a gov't who was consistently on the losing end of problems caused by the current regime, * you'd failed to get relief by diplomacy, * cou

Well, * if you were a gov't who was consistently on the losing end of problems caused by the current regime, * you'd failed to get relief by diplomacy, * couldn't or wouldn't seek relief by open warfare, * and didn't mind the remote prospect of making your situation worse, Why not? Personally, I don't think a gov't did it. I've always liked Kaminsky's "it's a group of quants" hypothesis. Or maybe Michael Clear. Or maybe some other Physics/CS type. But I really have no idea, and haven't really looked into it more than reading random internet news.