Tony Blair has said he had to act on information he was given in reports at the time even if some of it turned out to later be wrong.
He told a press conference: "I only ask that people read the reports given to me, first in September 2001 and then in March 2002, and in the days leading up to the invasion.
"In hindsight, we now know that some of this information was not correct, but I had to act on the information I had at the time."
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.