Well there are many ways to look at it, quoting you here
and Hindus in Delhi took the opportunity to occupy other kingdoms after British abandoned the occupation, including a Tamil South.
The only way to ensure permanent occupation, as it says in the Bible, is to have permanent settlements. People tend to fight for their land since it ultimately defines them for who they are. I give you the Kurds, the Basque, the Croats, and the Tamil.
The only way to end such conflicts is either to give up territory, or give up power.
The process of independence in India was at very complex time, preceded by equally complex history of Independence struggle, at the time of independence there were several factors in what is now India,
The congress had credible leadership and infrastructure (party workers-party offices) in most of the populous cities of pre independent India.
The form of governance was centered around the process of providing political instruments to all major sections of the population.
The power of the so called old block of leaders (Kings) was reduced to a degree (being the supporters of the Raj) which ensured that they never had any significant control over the people or the Military.
And the most important of all, a strong opposition was created as soon as the process of democratic governance started.
Of course the fault line of such a nation was huge, big enough for many (including Indians) to doubt the very existence of a nation with such huge cultural divisions, Doubts that continue to this day, with active separatist/independence struggles.
The point behind me typing on and on about this is that there is not just a single solution to a set problem.
Even in a nation like Afghanistan or Iraq (places where people have not seen eye to eye for much longer time then I have been on this earth), the idea of providing political tools to the people/groups for the resolution of those differences is not lost, it is more difficult and will take more time, and even if a success rate is observed some opposition will no doubt exist, however that resistance/opposition can be reduced to manageable levels with out a general need for integration or cultural manipulation with the larger picture, a sort of agreement to disagree as they say.
Obviously it will not happen if the advantages of perusing political solutions is denied to the people, and that should be the goal for the insurgents/terrorists/separatists, to deny/sabotage/disrupt the political process, something which is not unique to Iraq or Afghanistan.
May be the military forces can eventually provide an environment peaceful enough for the people to be willing to make the required sacrifices that will follow, once that is done will the hard part of finding a political solution can start.
Easier said than done.
The military operations expenditure might be more than the aid+rebuilding-infrastructure expenditure in these places.
This opinion of mine is purely based on the limited international TV news i have seen about the situation.
If this is true it signifies a stategy on the part of the NATO and USA which is bound to miss/delay the goal of a stable Afghanistan (if that is a goal).