What about when British Airways was flying into Tunisia when all the troubles started over there. The Foreign Office told people that it wasn't a great place at the moment but BA still continued operations as normal. Even check-in staff said everything was fine. I know some smartarse will probably say that we all need to watch the News but surely the airline must have some moral responsibilities or is it another case of money before safety??
The FO's standard line is to advise against travel unless you really have to. It would take something drastic to prevent airlines operating as normal.
I went to Romania just after the riots in the early 90's. I stayed at the Intercontinental in central Bucharest. There were bullet holes in the upper floor windows and just opposite was the smoking remains of a public building.
That's life I'm afraid.