Kabul FIR
International,
you are partly correct. This was part of an emergency backup measure (amongst a number of other options) that has been discussed in the ICAO meetings.
It was only to be used if the KABUL ACC closed from Dec 15, which is now not going to happen, as the NATO/ISAF agreement to extend IAP for another 6-9 months (it will be at least 9 months most likely longer).
As I mentioned the interagency agreements have been signed, just waiting for the final contract extension to be issued.