Looking at the FlightAware maps/routes, I have a couple questions:
1) it looks like UA doesn't have any qualms about flying over Iran, then continuing over Georgia, Azerbaijan, Ukraina - Novorossiya - Russia and onto Scandinavia and over the Atlantic. So why does DL avoid flying over Iran and UA doesn't?
2) looking at the DL route, it looks like it flew along the Saudi Arabia/Iraq border, Syria, Lebanon, Cyprus all the way over to Greece before heading north northwest. Why? Why not make the turn sooner (i.e. over Turkey)?