In Vietnam the problem was the 15ish year long civil war predating all the things. In Afganistan, the same thing, only longer. This stuff can't be fixed by land

In Vietnam the problem was the 15ish year long civil war predating all the things. In Afganistan, the same thing, only longer. This stuff can't be fixed by landing some marines, it only turns it into a shit-throwing match about who has better SAMs and logistics. Which is a definition of a proxy war.