Afghanistan¡¯s armed forces are so short of combat-ready aircraft that, late last year, they began fitting machine guns and rockets to Russian-made Mi-17 transport helicopters, dubbed ¡°flying tractors,¡± to bolster their air power.

With new planes capable of engaging Taliban insurgents delayed by over two years, and NATO air missions backing up troops on the ground now at a minimum, the fledgling Afghan Air Force is scrambling to provide even basic support.

That is a worry for 350,000 police, soldiers and other security personnel fighting militants across the country and dying at a rate of around 100 every week in the heaviest fighting of a 13-year conflict.