During the Gulf war the route out of Doha was usually south over UAE to AUH thence to southern Iran and Northwards, if West bound and from AUH to Muscat and onwards if East bound, aircraft would follow the reverse of these routes when routing to Doha. Now I would expect straight across the Gulf to the Iranian coast then northwards for Westbound, or to the South and East for East and South destinations, the reverse routing when inbound to Doha, no real problem, domestic traffic will suffer but not the major international routes.