The problem is simple!
The last time GF considered flying into Iraq they hired a British security company to design a plan. I know one GF captain who was involved. In short they said forces would fan out 1 hour prior to arr. in a 3 km circle (maybe 5km).
When asked about the range of attacks possible by various weapons currently in use in Iraq by insurgents they were told that thye had ranges well in excess of 5 km! The security team had no other answers. Needless to say the pilots were not accepting it.
If GF can't secure the saftey of its crews then either they should not fly into the airport or they should offer the crews the CHOICE as to whether or not they operate.