Former prime minister Tony Blair has said that he took the decision to go to war in Iraq "with the heaviest of hearts" and that "there was no middle-way".
Blair added that he made the decision believing that it was the right thing to do, but knowing that it was not a popular one.
He added that leaving Saddam Hussein in power would have had higher costs than going to war.
Alex Salmond told Peston on Sunday that he was backing the motion because a "verdict" on Blair was needed.
The long-awaited publication of the Chilcot report has raised many questions - we take a look at some of the key issues.
Thursday morning's newspapers were no less critical of Tony Blair than Sir John Chilcot's report into the Iraq war itself.