We do have an international obligation but I disagree with the method.
http://www.afghangovernment.com/briefhistory.htm
This is a little long but It explains my idea why I think we will not succeed. These people have been in conflicts for hundreds of years and have never really governed themselves. If you read the last sentence of the 7th. paragraph it says "for Afghans it meant little that their lives were now be uprooted and destroyed by ethnic kin, AS OPPOSED TO FOREIGN INVADORS". They do not want outsiders on their lands. Some will say NATO was invited by the government, a US friendly government not one of the people. Also British soldiers are there do you really think that after the games they played with Russia in Afghanistan they people will welcome them with open arms? The CIA supplied billions of dollars of arms to the Mujahadeen they even supplied them with anti-aircraft and anti-tank missles. After the Russians were ousted the US lost interest and the country returned to a war of warlords.
I realize that we had to go in with guns to fight the Taliban. NATO was invited. Did anyone think of finding what the people want? It is good to build schools and medical services but first of all these people need to eat. Their poppy fields are being destroyed, that is the only way they can make money to feed their families! In the meantime our drug companies are complaining they do not have enough opiates to make pain killers. Why not create something like an Opiate Board that would sell this opium to licensed companies for the farmers? We do it with out wheat and may other products. But no their livelyhood is taken away. If this was done they might be able to work their field, with our help and knowledge of agriculture, to grow food. If this is not done, as soon as we are gone they will revert back to their old ways, poppy fields and Taliban.
We are there to do a job we should do it completely not half ass. Our sons are dying let it not be in vein.