Many of the families of British service personnel who died in the Iraq War are still angry with Tony Blair, with one family member branding the former prime minister the "world's worst terrorist".
As ITV News' correspondent Martin Geissler reports, at last, with the publication of the Chilcot Report, they feel the truth is on their side.
The Chilcot Inquiry into the Iraq War found today that the British military were sent to Iraq with inadequate preparation and resources.
The lack of proper planning led to fatal mistakes, and in total, 179 British personnel lost their lives during the conflict.
ITV News Political Correspondent Carl Dinnen reports:
Tony Blair has said he would go to war in Iraq again - if faced with the same information he had 13 years ago.
The former prime minister answered questions from press after giving a statement following the publication of the Chilcot report.
ITV News Political Editor Robert Peston reports:
The former international development secretary Clare Short has said she is "ashamed" of the Iraq War and "we cannot undo the harm we have done".
Mrs Short, who served in Blair's government, said: "The suffering of the people in Iraq is unbearable, the destabilising of the region, the birth of ISIS, it makes me very upset, very ashamed, I think most people in Britain feel ashamed and full of regret, we cannot undo the harm we have done but at least the country needs to learn about how badly those decisions were made and make sure we never do it again."
There was no imminent threat in Iraq and the possibility for a diplomatic solution was cut short, the former international development secretary Clare Short said.
Short, who served in the Blair government in the run-up to the Iraq War, told ITV News: "The suspicion there might be some WMD had been there for years and years. There was no imminent threat, there was no immediate danger, this was a long term issue.
"The only reason for the date of the invasion is America decided on that date and what Chilcot says absolutely clearly is the possibility for a diplomatic solution was cut short."
She added that at the time "Blair wasn't being straight with us or indeed with the country and I think everybody knows that."
Tony Blair should be brought to account over the Iraq War after the publication of the Chilcot report, the father of a soldier killed in the Iraq War has said.
Prominent anti-Iraq-War campaigner Reg Keys, whose 20-year-old son Thomas Keys, from Bala, in Gwynedd, died in Iraq, said lawyers will now be examining whether this was an illegal war.
He said he would like to see legal action against Mr Blair and other politicians who were involved in the decision to send troops to Iraq.
Mr Keys said the "ultimate goal" would be "to hold them to account in a court of law" but "publicly they've already been judged".
Former President George Bush has not read the Chilcot report but has said he continues to believe "the whole world is better off without Saddam Hussein in power".
George Bush was "hosting wounded warriors" at his ranch and "has not had a chance" to read the report, his spokesman said.
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In a statement given to ITV News, Mr Bush's spokesman said: "President Bush is hosting wounded warriors at his ranch today and has not had the chance to read the Chilcot report.
"Despite the intelligence failures and other mistakes he has acknowledged previously, President Bush continues to believe the whole world is better off without Saddam Hussein in power.
"He is deeply grateful for the service and sacrifice of American and coalition forces in the war on terror. And there was no stronger ally than the United Kingdom under the leadership of Prime Minister Tony Blair. President Bush believes we must now find the unity and resolve to stay on the offensive and defeat radical extremism wherever it exists."
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Tony Blair has hit back at those who criticised his decision to go to war with Iraq saying they should say what would have happened if he hadn't.
The former prime minister told a press conference: "If someone is going to say that decision is wrong, then they need to spell out what would have happened if I had taken the opposite decision.
"And what isn't fair is to say 'well, I don't think you should have done that', but I don't take a view on what you should have done. I'm afraid, that's not decision making."