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Former Prime Minister Tony Blair will give evidence to the Iraq Inquiry for a second time on 21 January.
He is one of a number of key figures, including former Foreign Secretary Jack Straw, asked to appear before the Chilcot committee again.
Last year Mr Blair defended his decision to take the country to war, saying he had no regrets about it and that Saddam Hussein was a “monster”.
The inquiry said it wanted “more detail” in some key areas.
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