You can't fly in Iraq without GPS. There are essentially no ground-based NAVAIDS. Before you whine about the crew that can't do anything manually, read the Iraq AIP:
3.3.1.1 A diagram of the ATS routes within the Baghdad FIR is at ENR 3.3-6. All ATS routes in the Baghdad FIR are area navigation routes (RNAV) designated for aircraft approved for Required Navigation Performance 5 (RNP5) operations. Aircraft must be capable of maintaining RNP5 without reliance on ground based navigation aid updates in the Baghdad FIR.
I wouldn't go there without effective nav gear....