The major political controversy of the war in Iraq is one of the many stories that The Crown season 6 should cover. The final season of Netflix's historical drama will depict the lead-up to and aftermath of the tragic death of Princess Diana in 1997, but the casting of Ed McVey as an older Prince William suggests that season 6 will go beyond the tragedy of 1997. The start of the new millennium was a tumultuous time for both Western society, and the Royal family, and it's likely that showrunner Peter Morgan will reflect this in the second half of The Crown season 6.
https://screenrant.com/crown-season-6-iraq-war-blair-controversy-story/