I'm sure that a lot of western airlines have a list of countries around the world, which are known to their pilots and those who need to know, which are preferably to be avoided unless a greater emergency exists.
For example, I'm sure that most airlines would prefer you not to divert to Afganistan ever; likewise if on a flight to Israel, there are certain countries where it is prudent not to go to - as much if not more for the benefit of Israeli passport holders, rather than the airline staff.
In that sense, I'm sure that El Al have their own internal procedures, which may or may not differ from other airlines, but will be well worked out.