Joe did not need to do anything. He did not end the war, he LOST IT, HE CAPITULATED, AND LEFT THOUSANDS HANGING IN THE BALANCE IF NOT A WHOLE COUNTRY.
He took out the 18000 contractors supplying the afghan army around the country with helicopters/supplies, and they gave up when support was gone. The bullshit about they wouldn't fight is just a lame excuse.
You need to inform yourself about all aspects of what happened and is happening and you will see that Biden is all to blame for this. He had all the cards in his hands and he threw them into the garbage.
No army fights without support and strong leadership.
If he hadn't left in the middle of the night, as in Baghram, this would have never happened, especially this way.