A quick thought.......
In this day and age is there a real need for vast amounts of DCA aircraft? What credible foe are we likely to face in the future that will need fighters? Secondly, why are we buying 232 Typhoons without a multi-role capability off the shelf? Surely this little fracas in the desert has shown that swing-role aircaft are the way forward (F15E,F18E,F16CG all of which can defend themselves and thus negate the need for dedicated DCA)