If you leave a "war" that you didn't win because a victory was never proclaimed does that mean you lost? What's the story on Afghanistan?

You spin.  You turn everything into a win.
You lie.  You cheat.  You deceive.

And you use all tricks that are up your sleeve.

The fact is that your base is dense
they cannot tell a wall from a fence

The rest of us (and we are increasing) 
see behind your graft and fleecing.

This year will be your year to fall 
and it don't matter how much you spend on your wall.

Afganistan now has a government which, while upholding a conservative Muslim way of life, does not support the extremist fundamentalist views of the Taliban.
Yet the Taliban continue to be a sickly thorn in the side of the country with their continuing atrocities and acts of terrorism.

Recently, America, Australia and the U.N. have been maintaining skeletal forces there to help train the Afgan Govt's forces in how to deal with terrorism - attempting to help the Govt maintain as much peace and security as possible.

Yesterday, the Afgan Govt and the Taliban agreed to negotiate a truce and peace talks. Part of the deal is a request for foreign troops to leave.

Like Vietnam, I don't believe that the Western forces "won" in Afganistan. We had a partial win in that we helped to install and stabilise a govt with policies somewhat less odious to Western values and interests.
For myself, because I value women's rights and education, I would prefer to see Afganistan under a modernised and liberal regime.
But I am not comfortable with the idea of the West continuously imposing its values on others.
So I am ambivalent about the issue.

When is it right to intervene in another's affairs to prevent injustice, cruelty and suffering?
Should we not look twice before leaping?
Should we not study all aspects of a culture deeply and really understand what we are doing before acting?
Look at the mess we created in Iraq!
We made things far worse because we understood nothing of the society and its dynamics below the surface.
Would it not be better to examine ourselves and fix our own injustices, cruelties and sufferings in our home countries?

I feel nervous about the outcome of the peace talks because I'm not sure what kinds of compromises they will reach or whether they will work in the long run.

I can't see the Taliban letting go of their fanaticism any time soon - but given enough time, I think they could unwittingly destroy themselves from within.