OP-ED: Two decades after 2001, a world fractured

We still struggle to explain why al-Qaeda did what it did
We have all inhabited a fractured world for the 20 years which have gone by since the Twin Towers in New York were brought down by terrorists. It is a shame, a lasting pain we go through. Much has changed in the way we have lived, in the way we have thought, in the way we have dealt with the issues thrown up by the carnage caused by two aircraft flying into the Twin Towers and bringing them crashing down in a haze of dust and smoke and powder in a matter of minutes. 

We will long remember those searing images on our television screens, have not forgotten the pain it caused in all of us, this brotherhood of decent men and women, all over the world in that apocalypse.