OK, well we intervened in Libya and that looked like it might go well but in the end it broke down into tribal and secular/islamist infighting. Then we refused to intervene in Syria and now we have Islamic State.

I think we should have been more hands on in the first few months after Gaddaffi fell, got the transitional government to let us station a small a number of NATO troops in the capital and in particular a disproportionate number of military engineers to quickly repair roads and other infrastructure to get people's lives back to something as close to normal as we could, as quickly as possible.

In any case, Syria gives the lie to the charge that Libya is "our fault" because there's every chance things could be worse there now had we not bought the high intensity war to a close quicker.

As regards turning ships back - we should be doing it as close to the African and Levantine coast as we can manage, legally, because that's the minimum distance travelled for these deathtraps and it offers the best deterrent.

Importing refugees en masse just imports all their social problems, we should be taking practical steps to stem the human flood and to stabalise the countries they're fleeing from. Historically we did that last part by propping up Tyrants, I think that was a mistake but it's hard to find another solution.