Sources

https://en.wikipedia.org/wiki/Osama_bin_Laden

https://www.cfr.org/timeline/us-war-afghanistan

https://www.theguardian.com/commentisfree/2018/aug/19/its-time-to-end-americas-war-in-afghanistan

https://www.bbc.co.uk/newsround/15214375

https://www.foreignaffairs.com/articles/north-america/2018-08-20/united-states-perpetual-war-afghanistan