To imply we can bomb Qadaffi for Pan Am is an implication that tomorrow we can bomb Japan for Pearl Harbor.
That was before we found out that he, personally, ordered the bombing, not just that it was planned and carried out in his country, by some of his agents. That makes him a conspirator in murder. Unless Bush signed a full pardon, that would make him unprosecutable in the US, would it be non casus belli. The UK, Scotland, and any other country that had people on that illfated flight, would have reason enough to prosecute him as well.....