1. its not a war anymore, look up the definition of "war" and then try to apply it to the current situation. it is more of an occupation, won't last forever.
2. russia, lost because the US were giving the afgani people weapons, that the taliban are now using against america.
3. conquering doesn't work unless you use an iron fist, america lost in vietnam, gave up in somalia and the same has happened with most "wars" like this.
because these days war has rules, back with Atilla, Ghengis and rome obviously there was no rules to hold them back.
4. an exercise for all the people who are one sided out there, put yourself into the situation of an afgani and if you're too racist put america in afganistan's position, then think how you'd feel about this.