The Russians, who were unhampered by any "hindrances " such as a free press or qualms about the use of torture or even concerns about "collateral damage' couldn't win in Afghanistan. In fact nobody has really "won" in Afghanistan since the time of Alexander the Great. What makes Trump think he will be any different? Maybe he should be watching the PBS series on Vietnam and see why occupying armies tend not to do well in that general part of the world, or maybe read a little history written by non Hollywood writers.