Summary: Afghanistan-Vietnam parallels: A president, eager to show his toughness, vows to do what it takes to “win.” … The nation that we are supposedly rescuing is no nation at all but rather a deeply divided, semi-failed state with an incompetent, corrupt government held to be illegitimate by a large portion of its population. … The enemy is well accustomed to resisting foreign invaders and can escape into convenient refuges across the border. … There are constraints on America striking those sanctuaries. … Neighboring countries may see a chance to bog America down in a costly war. … There is no easy way out.