Conservative newspapers would be writing editorials like this:
Iraq has proved the stumbling-block for the doctrine of pre-emptive action espoused by George W. Bush and Mr Blair. In seeking to enforce it, both men were misleading about Saddam's weapons of mass destruction and have been guilty of crass mismanagement of the occupation, the disbanding of the army without adequate compensatory deployment of coalition troops being the outstanding example. Preoccupation with Iraq led to neglect of Afghanistan, which has allowed the resurgence of the Taliban, a mistake for which Nato-led forces are now paying a high price.
That's the Tory Daily Telegraph. I await the usual chorus accusing them of being "left-wing" or "excitable."