The Guardian view on Iraq, 20 years on: the costs of war | Editorial

The toll has been felt most of all, of course, within Iraq itself. Hundreds of thousands of civilians died in the violence that followed. The Costs of War project estimates that several times as many may have died from knock-on effects. More than 9 million Iraqis were displaced. Thousands of coalition personnel, mostly American, were killed. Trillions of dollars that could have been spent on improving lives were instead squandered destroying them. Much of the Pentagon spending went to just five huge corporations.

Iraq currently appears relatively calm. But US troops are still present due to the ongoing battle against IS. Though there is now a government, following a year of deadlock after elections and an outburst of violence in Baghdad, the state remains unable to keep the lights on or provide clean water. Politicians and officials have pocketed billions.