A soldier's sister who described Tony Blair as 'the world's worst terrorist' after the Chilcot report has challenged the former prime minister to meet the grieving families of British service personnel.

Sarah O'Connor, whose brother, Sergeant Bob O'Connor, was killed in 2005, accused the former premier of failing to 'look us in the eye' after the historic report into Britain's involvement in the war.

She hit out at Mr Blair's appearance before television cameras yesterday afternoon, in which he delivered a lengthy statement and took questions from journalists.

Elsewhere, Lord Macdonald, a former Director of Public Prosecutions, suggested Mr Blair could face charges for misconduct in public office.

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Sarah O'Connor, whose brother died in a plane crash in Iraq, called for Blair to 'look families in the eye'

Blair, pictured leaving his home this morning, was yesterday branded a 'terrorist' by Ms O'Connor

Speaking on ITV's Good Morning Britain, she said: 'There is one final thing I would like to say to Mr Blair. He said yesterday that while he takes responsibility he can look the families in the eye. Well, looking down the lens of a camera is not looking us in the eye.

'So, Mr Blair, challenge accepted. I've thrown down the gauntlet. Come and look me in the eye.'

She added: 'He's had enough requests from us, he's always refused.

'He wouldn't look us in the eye when he came to give his evidence and he wasn't there yesterday. He was protected by signed-off, lawyer-approved, damage limitation ... a two-hour, rambling indictment of the inquiry findings.

'He's so disillusioned by his own sense of self-power. There's a disconnect because looking down the lens of a camera is not looking people in the eye.'

She told Mr Blair: 'So come meet us. Do it in a TV studio. Do it where you choose. But do it.'

Engineering technician Sergeant O'Connor was killed alongside nine others when their Hercules military plane was shot down near Baghdad in 2005.

In a statement at the time, comrades said: 'He was held in the highest esteem and regard by his work colleagues and superiors for his knowledge, dedication and professionalism.

'During his tours, he was an active sportsman and a keen participant in all aspects of the fabric of station life. He will be sadly missed.'

Ms O’Connor fought back tears yesterday after the publication of the Chilcot report as she condemned Mr Blair’s behaviour and his failure to offer families a face-to-face apology.

‘There is one terrorist in this world that the world needs to be aware of, and his name is Tony Blair – the world’s worst terrorist,’ she said, to claps and cheers from other relatives. ‘If he is so sure of his decision, why is he not here, looking at our eyes and actually seeing our faces?’

Sergeant O'Connor was one of 10 British servicemen who died when their plane crashed in Iraq in 2005

Blair said yesterday he expressed 'sorrow' for those who died, but said he would go to war with Iraq again

Lord Macdonald, a former Director of Public Prosecutions, suggested Mr Blair could face charges for misconduct in public office.

He highlighted a 2003 assurance to Attorney General Lord Goldsmith that Saddam Hussein had committed fresh material breaches of UN Security Council resolution 1441. It is not clear what basis Mr Blair had for giving the assurance.

'In behaving in this disreputable way to win tainted legal backing for massive armed conflict, it seems very likely that Mr Blair roundly abused the trust placed in him by the public.

'The only remaining question is whether he had a reasonable excuse. Mr Blair, of course, will resort to familiar claims of security Armageddon in the event of Saddam's survival in power but Chilcot and history have combined to expose his defence as a busted flush,' Lord Macdonald said.

But human rights barrister Geoffrey Robertson warned prosecuting Mr Blair was a 'fantasy'.

Writing in the Guardian, he said: 'This hypothetical, however engaging, is a legal impossibility.

'Instead, we need to concentrate on how the law should be changed to ensure that future leaders who wage wars of aggression can be brought to account.'

Grieving relatives, who had feared the report on the war would be a whitewash, yesterday hailed Sir John Chilcot's scathing criticism of the former prime minister as a complete vindication.

But they expressed their anger towards Mr Blair, saying he will 'never be forgiven' and insisting that their loved ones died 'in vain'.

Many could not contain their emotion as they watched Sir John deliver a summary of his findings, which finally gives them some answers after years of delays and which they feel supports their long-held belief that Mr Blair led British soldiers into the war in 2003 on flimsy grounds.

Dozens of family members of the 179 soldiers killed in Iraq stood in solidarity at a press conference after being handed copies of the long-awaited report, with many clutching photographs of their deceased loved ones.

Rose Gentle, whose 19-year-old son Gordon died when a roadside bomb destroyed his vehicle in 2004, said Mr Blair would never be forgiven for his actions.

Bereft: Dawn Holmes, the heartbroken mother of L Cpl Sarah Holmes, who died in Iraq, cries as she clutches a picture of her child after the Chilcot report was released while Sarah O' Connor, whose brother Sergeant Bob O'Connor also died, kisses his picture

Rose Gentle, whose son Gordon, 19, was killed in Iraq holds the hand of Sarah O'Connor, whose brother Bob also died in the conflict

Mrs Gentle called for the former Labour leader to be held accountable as he offered a meagre apology and insisted that British troops had not died ‘in vain’.

She said: ‘He will be remembered not as a prime minister but as a person who sent them on an illegal war. I would love to see him in court. I hope he goes to bed at night and thinks “what the hell have I done?” because he’ll never be forgiven.’

Reg Keys – whose son 20-year-old Lance Corporal Thomas Keys from Gwynedd, Wales, was killed as he guarded a police station in 2003, four days before his 21st birthday and two weeks before he was due home – said it was clear his son ‘died in vain’ after Mr Blair ‘deliberately misled’ the country.

Mr Keys, who has fought tirelessly for the truth and stood against Mr Blair in his Sedgefield constituency in the 2005 general election, added: ‘When we look at Iraq on our TV screens today, the 200-plus deaths that took place the other day [in an Islamic State bomb attack in Baghdad], I can only conclude that sadly, my son died in vain.

‘Now we have had the endorsement of a thorough, robust inquiry, which has endorsed all the families’ fears that these young men and women were deployed on the basis of a falsehood. It has given us a launchpad to go forward and search for yet more answers.’

Messages which passed between Tony Blair and George W Bush in the build-up to the Iraq war were published in the Chilcot report

At an emotional press conference following the report's release held by some of the relatives and their lawyers, Ms O'Connor said Blair should 'look us in the eye', as she described him as 'the world's worst terrorist'

The families were yesterday praised for acting with ‘patience, dignity and courage’ despite being left in the dark about the report’s contents before its publication.

They are considering taking legal action against Mr Blair on the grounds he misled Parliament to justify the invasion. Their lawyer Matthew Jury said that the group will consider all legal options after undertaking a ‘full and forensic review’ of Chilcot’s findings in the coming weeks.

The soldiers’ relatives believe Mr Blair could be guilty of ‘malfeasance in public office’ by misusing his constitutional powers, which led to mass casualties.

Their call for him to be taken to court was backed by Labour politician Paul Flynn who said the report was an ‘utter condemnation’ of Mr Blair’s decision to invade Iraq. The shadow Commons leader, who voted against going to war, said: ‘I think there should be serious consideration of him being prosecuted for this.’

Former SNP leader Alex Salmond said some form of Parliamentary action could be taken, adding: ‘These were decisions made by a human being and that prime minister was Tony Blair.’

The International Criminal Court, however, has said Mr Blair would not face war crime charges as his decision to go to war is outside its jurisdiction.

There have been suggestions the ICC could probe more than 1,000 allegations that UK forces tortured and mistreated Iraqi prisoners.

However, the government has insisted the court does not have the power to do so because a domestic investigation of allegations has begun.

Families of some of the soldiers killed in the Iraq War plan to take legal action against Tony Blair, following today's long-awaited report into the conflict. Pictured are protesters outside the former Prime Minister's home yesterday

Relatives and friends of the servicemen and women who died in iraq outside the Queen Elizabeth II Centre

179 dead: The brave British servicemen and women who lost their lives in the Iraq War

The six-year Iraq War claimed the lives of 179 British servicemen and women before the conflict came to an end in May 2009.

According to a study of the war-torn nation, an estimated 461,000 Iraqis were also killed between March 2003 and June 2011 as a direct or indirect result of the fighting.

Here are the faces of the British men and women who died for their country:

(left to right top row) Captain Philip Guy, Naval Rating Ian Seymour, Warrant Officer 2nd Class Mark Stratford (Silhouette), Marine Sholto Hedenskog, Lance Bombardier Llywelyn Evans, Colour Sgt John Cecil, Major Jason Ward, Sergeant Les Hehir, Lt Philip Green, Lt Tony King; Lt James Williams, Lt Philip West, Lt Marc Lawrence, Lt Andrew Wilson, Flight Lt Kevin Main, Flight Lt Dave Williams (Silhouette), Sapper Luke Allsopp, Staff Sergeant Simon Cullingworth, Sergeant Steven Roberts, Lance-Corporal Barry Stephen;

(left to right second row) Corporal Stephen Allbutt, Trooper David Clarke, Lance Corporal of Horse Matty Hull, Royal Marine Christopher Maddison, Lance Corporal Shaun Brierley, Major Stephen Ballard, Staff Sergeant Chris Muir, Lance Corporal Karl Shearer, Fusilier Kelan John Turrington, Lance Corporal Ian Malone, Piper Christopher Muzvuru, Lt Alexander Tweedie, Lance Corporal James McCue, Private Andrew Kelly, Gunner Duncan Pritchard (Silhouette), Corporal David Sheppard (Silhouette), Leonard Harvey, Sergeant Simon Hamilton-Jewell, Corporal Russell Aston, Corporal Paul Graham Long;

(left to right third row) Corporal Simon Miller, Lance Corporal Benjamin McGowan Hyde, Lance Corporal Thomas Keys, Captain James Linton, Private Jason Smith (silhouette), Captain David Jones, Major Matthew Titchener, Warrant Officer Colin Wall, Corporal Dewi Pritchard, Fusilier Russell Beeston, Sergeant John Nightingale, Corporal Ian Plank, Private Ryan Thomas, Major James Stenner (Silhouette), Sergeant Norman Patterson (Silhouette), Lance Corporal Andrew Craw, Rifleman Vincent Windsor, Sapper Robert Thompson, Corporal Richard Ivell, Fusilier Gordon Gentle;

(left to right fourth row) Flight Lt Kristian Gover (Silhouette), Private Christopher Rayment, Private Lee O'Callaghan, Private Marc Ferns, Lance Corporal Paul Thomas, Fusilier Steven Jones, Corporal Marc Taylor, Gunner David Lawrence (Silhouette), Private Kevin McHale, Staff Sergeant Denise Rose, Private Paul Lowe, Sergeant Stuart Gray, Private Scott McArdle, Private Pita Tukatukawaqa (Silhouette), Sergeant Paul Connolly (Silhouette), Squadron Leader Patrick Marshall, Flight Lt David Stead, Flight Lt Andrew Smith, Flight Lt Paul Pardoel, Master Engineer Gary Nicholson;

(left to right fifth row) Chief Technician Richard Brown, Flight Sergeant Mark Gibson, Sergeant Robert O'Connor, Corporal David Williams, Acting Lance-Corporal Steven Jones, Private Mark Dobson, Guardsman Anthony Wakefield, Lance-Corporal Alan Brackenbury, Signaller Paul Didsbury, 2nd Lt Richard Shearer, Private Philip Hewett, Private Leon Spicer, Fusilier Donal Meade, Fusilier Stephen Manning, Major Matthew Bacon, Captain Ken Masters, Sergeant Chris Hickey, Sergeant John Jones, Lance Corporal Allan Douglas, Corporal Gordon Pritchard;

(left to right sixth row) Trooper Carl Smith, Captain Richard Holmes, Private Lee Ellis, Lt Richard Palmer, Flight Lt Sarah-Jane Mulvihill, Wing Commander John Coxen, Lt Commander Darren Chapham, Lt David Dobson, Marine Paul Collins, Private Joseva Lewaicei, Private Adam Morris, Lt Tom Mildinhall, Lance Corporal Paul Farrelly, Corporal John Cosby, Corporal Matthew Cornish, Gunner Samuela Vanua, Gunner Stephen Wright, Gunner Lee Thornton, Lance Corporal Dennis Brady, Lt Tom Tanswell;

(left to right seventh row) Kingsman Jamie Hancock, Staff Sergeant Sharron Elliott, Warrant Officer 2nd Class Lee Hopkins, Marine Jason Hylton, Corporal Ben Nowak, Sergeant Jonathon Hollingsworth (Silhouette), Sergeant Graham Hesketh, Sergeant Wayne Rees, Kingsman Alex Green, Private Michael Tench, 2nd Lt Jonathan Bracho-Cooke, Private Luke Daniel Simpson, Rifleman Daniel Coffey, Private Jonathon Dany Wysoczan, Kingsman Danny Wilson, Rifleman Aaron Lincoln, Corporal Kris O'Neill, Second Lieutenant Joanna Yorke Dyer, Kingsman Adam James Smith, Private Eleanor Dlugosz;

(left to right eighth row) Colour Sergeant Mark Powell, Sergeant Mark J McLaren, Corporal Ben Leaning, Trooper Kristen Turton, Kingsman Alan Joseph Jones, Rifleman Paul Donnachie, Major Nick Bateson, Private Kevin Thompson, Corporal Jeremy Brookes, Corporal Rodney Wilson, Lance Corporal James Cartwright, Major Paul Harding, Corporal John Rigby, Corporal Paul Joszko, Private Scott Kennedy, Private James Kerr, Rifleman Edward Vakabua, Lance Corporal Ryan Francis, Corporal Christopher Read, Aircraftsman Peter McFerran;