"Victory has many Fathers...Defeat is an orphan". Both sides knew that withdrawal was the right decision or they would have screamed loudly back in 2020. The exit process isn't going well for the Afghanis, so that overlooked part of the 2020 deal is what is causing both Houses of Parliament to seek cover...(btw...that 'overlooked' part was the responsibility of the negotiators).
Link: https://www.bbc.com/news/58271943