Again I'm not sure why you're ignoring this but it was only the US that came up with that conclusion, and super quickly too. The other european intelligence agencies, including the German one, didn't agree with the libyan connection. But I'm sure the US knows more, and more quickly than everyone else in Europe (which at the time, had a very strong intelligence apparatus since each country was more independent than it is now).

It's especially convenient that the US did not wait for the results of any investigation before launching an attack. This is just pure american chauvinism, where the US can do no wrong as long as we just believe that their intelligence agencies are always right. I guess it works for americans but to the rest of the world, it just doesn't cut it.