its opium ...
how many vietcong fighters died in vietnam..the loss they are taking is nothing as compared to that..
society is already collapsed imagine the shock it will get once 30 million population gets another 5 million refugees kicked out by pakistan...
afghan forces are handicapped because central govt and donars are no longer able to keep up with no corruption..
where as war criminals have been propped up as leaders...
in the end USA will simply leave while india wills imply pack up (they almost did, untill trump was shown beautiful pictures of afghan girls in skirts!), leaving decades of cleaning up for neighboring countries of Pakistan, iran, central asia and china...
apparently you are not reading the Afghanistan situation..the situation is bad for last 4-5 years only, talibs were nearly completely finished first but thanks to opium, lack of intelligence sharing from neighboring countries, bringing in war criminals, and corruption.... they got back strong...