Tony Blair's essay 'Iraq, Syria and the Middle East' rejects claims that invading Iraq in 2003 is linked to current violent insurgency.
Today's developments mean we should soon get a better understanding of the conversations that led to Iraq war - if only the "gist".
Former US president George W Bush has unveiled a series of his own paintings of world leaders he met while in office.
David Cameron met the Middle East peace envoy Tony Blair at the British consulate in Jerusalem.
The two spoke for 20 minutes, discussing the peace process.
Asked whether missile attacks could knock the plan off track, Mr Blair said: "The strikes from Gaza just underline and illustrate the depth of the problem.
Tony Blair said the British Government has a great opportunity in the Middle East, "because it is relatively trusted by both sides, which is quite rare in this situation."
Tony Blair is meeting in Jerusalem with senior trade delegation led by @uktrademinister to discuss Initiative for the Palestinian Economy
Speaking to David Cameron for 20 minutes in Jerusalem, the Quartet special envoy Tony Blair gave his backing to the Prime Minister's drive to boost economic links. He said the trade side is "absolutely vital."
"The economic side, which is absolutely vital because if we don't build the Palestinian economy up at the same time as you are pursuing the political negotiation then a state for the Palestinians seems a dream and not a reality," Mr Blair said.
David Cameron is meeting Palestinian president Mahmoud Abbas today on the second day of a trip to the Middle East designed to bolster efforts to rekindle the stalled peace process.
Mr Cameron will also hold talks with one of his predecessors, former Prime Minister Tony Blair, to discuss progress on peace talks. Mr Blair is the European peace envoy of "the Quartet" of the United Nations, the EU, the US and Russia.
They are expected to meet for 20 minutes in East Jerusalem to discuss Mr Blair's Palestinian economic initiative, which aims to promote growth in the West Bank and Gaza Strip.
The Prime Minister's appeal yesterday for Israelis and Palestinians to embrace a vision of lasting peace in the region was undermined by a barrage of more than 30 rockets fired from Hamas-controlled Gaza into the south of Israel.
Tony Blair's former chief of staff and Britain's chief negotiator in the peace process has said Northern Ireland's secret letters crisis is based on "a misunderstanding."
Writing in The Times, Jonathan Powell said discussions about "on-the-runs" were "no secret" and a "recurring issue" throughout peace process negotiations.
"The letters are statements of fact, and certainly have nothing to do with an amnesty," he added.
John Downey’s release, he goes on, "has nothing to do with an amnesty or a secret deal and everything to do with a cock-up."
Former Prime Minister Tony Blair engaged in a "deliberate deception by omission" by failing to tell the majority of politicians in Northern Ireland about the agreement his government struck with Sinn Fein to deal with on-the-run republicans, Stormont's First Minister has said.
Peter Robinson heavily criticised the conduct of the previous Labour administration as he addressed an emergency meeting at Stormont to debate the controversy over letters sent to more than 180 terror suspects informing them the authorities in the UK were not seeking them.
"The answer that there were no plans to legislate and no amnesty would be introduced was a deliberate deception, a deception by omission, for the Government could easily at that stage have indicated that there was an administrative process which included giving letters to OTRs," he told MLAs.
Former prime minister Tony Blair has warned terrorism motivated by religious extremism is growing and the West needs a global strategy to tackle it.
Mr Blair writes in The Observer that wars in the 21st Century will no longer be about extreme political ideology like the last.
The Middle East peace envoy said the West must tackle conflicts by educating people about religious tolerance alongside security measures, including military action.
He writes: "The fact is that, though of course there are individual grievances or reasons for the violence in each country, there is one thing self-evidently in common: the acts of terrorism are perpetrated by people motivated by an abuse of religion.
"It is a perversion of faith. But there is no doubt that those who commit the violence often do so by reference to their faith and the sectarian nature of the conflict is a sectarianism based on religion. There is no doubt either that this phenomenon is growing, not abating."
Speaking at the state memorial service in the southern Negev desert, former Prime Minister Tony Blair paid tribute to Ariel Sharon's "idea that the Jewish people, so often victims of injustice and persecution, should have a state where they could be independent and free."
"Think good or ill of Arik Sharon, agree or disagree with him, but that calling - a noble one - was plain and unalloyed," he said.
Sharon, he added, was "a warrior to create his country, yet wise enough to know that war alone could not secure his future."
"He was a giant of this land."
Former prime minister Tony Blair, Russian foreign minister Sergey Lavrov and US Vice President Joe Biden will attend the state funeral of Ariel Sharon on Monday.
The beleaguered inquiry into Tony Blair's handling of the Iraq War is due to be published in the new year, according to the Guardian.
A compromise over the publication of letters between then-US President George W Bush and Mr Blair has been reached, allowing the Chilcot inquiry to be made public.
A senior Whitehall source was quoted as saying, "In the new year it seems the Chilcot inquiry is going to be published. Everyone will be assuming: bad hair day for Tony Blair and Jack Straw".
Sir John Chilcot began the inquiry in November 2009 and will publish an edited version of "sensitive correspondence".
A new portrait of former Prime Minister Tony Blair has been unveiled at the National Portrait Gallery in London.
The oil painting, which measures 4ft by 3ft was started by artist Alastair Adams two years ago with several sitting's at Mr Blair's home. Curator Sarah Howgate said:
"The direct gaze of the sitter is uncompromising but also reflects his considerable skill as a negotiator on the world stage.
"The gallery is now able to represent Tony Blair with a portrait consonant with the personality of an individual who has considerably shaped the political, economic and cultural climate of Britain."