Is it time the US apologised for invading Iraq?

Fifteen years since the invasion of Iraq, we ask retired US Brig Gen Mark Kimmitt about war crimes and the war's legacy.

Fifteen years after the US-led invasion of Iraq, the consequences of the subsequent war continue to be debated. According to the UN refugee agency, more than four million people have been displaced. There is no widely accepted figure for civilian deaths, but estimates run from the hundreds of thousands into the millions. 

"Would we like a do-over, of course we would," says Mark Kimmitt, retired US Brigadier General who served as deputy director of operations and chief military spokesman in Iraq from 2003 to 2004.

While Kimmitt accepts the US "did get some things wrong" in Iraq, he says his country's military has nothing to apologise for.