The Iraq war inquiry has left the door open for Tony Blair to be prosecuted
Joshua Rozenberg
6 July 2016
Sir John Chilcot’s inquiry has not, in his words, “expressed a view on whether military action [in Iraq] was legal”. That question, he said, could be resolved only by a court. Still less does his report deal with the question of whether Tony Blair or others should face legal action.
https://www.theguardian.com/commentisfree/2016/jul/06/iraq-war-inquiry-chilcot-tony-blair-prosecute
It took 13 years to do so.