Great news that Gaddafi is considering exile.
This raises contradictory emotions. On the one hand, we want Gaddafi out of Libya, because his regime will undoubtedly collapse when he goes, since it is structured so closely around his personality.
On this basis, the UN and the Allies should be making clear to Gaddafi that we will do everything to facilitate his exile, providing jets, visas, hotels and any other travel arrangements that he requires. Threats of legal action may motivate him to fight to the death.
On the other hand, it is an offence against natural justice that he should retire in comfort when he has committed so many crimes. People who have lost friends and relatives to the regime will seek justice.
This contradiction can be resolved in this way: Cameron &c can say to Gaddafi, "Politically we will help you to go into exile. We will not prosecute you, but we have no control over the legal process. That is up to the lawyers. You will have to engage a top lawyer to defend yourself."