对越自卫反击战为什么中国不直接攻克河内，却在攻克了离河内很近的谅山后进行撤退？

军事是政治的延伸，政治决定军事。政治就是惩罚越南，揍它一顿，给美国人出气，而不是夺取这个国家的政权。而且当时军队后勤能力有限，进入雨季后的气象环境会对战士们更加不利。····························································································································································································································································································································

战略目标达成，见好就收。没必要增加不可控的因素。