It also questions the success of the programme to train and equip the Afghan military and police forces, noting that the projected cost of running a force of 350,000 after 2014 will be $8-10 billion a year, more than the US is willing or able to pay.
If Petraeus is of the opinion that a) the only thing standing between the ANA and ANP being an effective bulwark against the Taliban and the Haqqani Network is more time and b) there is no reason to believe that the U.S. Government is ever going to tire of subsidizing the two, effective or not, I have to wonder about his suitability for his current position.
In the Afghan war, there are now two plausible choices.
There would be more if the strategy had not been formulated around a centralized national government.