It is now thirteen years since US and British troops entered Iraq and the significant costs are still being counted: hundreds of thousands of lives lost, millions of refugees, increased insecurity for the UK, enormous financial cost, and the emergence of Daesh contributing to an increasingly volatile region. Will the much-delayed report sufficiently address the UK’s widely criticised involvement? We will be joined by a panel of experts to hear their initial reactions – and without the power to assign criminal culpability, we will consider the report’s potential impact in bringing those accountable to justice and in assuring that a foreign policy disaster of this scale is not repeated.

Chaired by Channel 4 News international editor, Lindsey Hilsum.

The panel:

Hayder al-Khoei is an associate fellow at the Middle East and North Africa programme at Chatham House and research director of the Centre for Academic Shi’a Studies. He is also a member of the Atlantic Council’s Task Force on the future of Iraq.

Carne Ross is the executive director of Independent Diplomat. He is a former British diplomat who resigned in 2004 after giving evidence to the Butler Inquiry into the Iraq war.

Emma Sky is a Senior Fellow at Yale University’s Jackson Institute. She worked in the Middle East for twenty years and was made an Officer of the Order of the British Empire for services in Iraq. She is the author of The Unraveling: High Hopes and Missed Opportunities in Iraq.

Christopher Elliott, retired as a major general from the British Army in 2002. He is currently a visiting professor of Cranfield University, an associate fellow of RUSI and author of High Command: British Military Leadership in the Iraq and Afghanistan Wars.

Despite hundreds of thousands of people having taken to the streets of London and elsewhere to voice their opposition to military action in Iraq, on 19 March 2003, air strikes on the Presidential Palace in Baghdad began.

What followed was a US-led invasion that toppled Saddam Hussein’s government, and marked the start of years of violent conflict. Ten years on, in a debate chaired by Channel 4 News’ Jon Snow, we will ask: have lessons been learned?

The legacy of the Iraq War changed Western foreign policy, but with talk of Northern Africa becoming a new front in the war on terror, have the mistakes of Iraq been sufficiently ingrained on the consciences of populations and governments? To what degree is the impact on relations between the Middle East and the West still felt?

We will also be examining what has been heard at the Chilcot Inquiry and why we are still waiting to hear the findings.

Chaired by Channel 4 News presenter Jon Snow.

The panel:

Caroline Wyatt has been BBC defence correspondent since October 2007, covering the work of British Forces in Iraq and Afghanistan. In 2003 she was embedded with British troops reporting on the war and its aftermath in and around Basra. Previously she has been BBC correspondent covering Paris, Moscow, Berlin and Bonn.

Rt Hon Jim Murphy is Labour Member of Parliament for East Renfrewshire. He is currently the Shadow Secretary of State for Defence and has previously served as Secretary of State for Scotland.

Jack Fairweather is the author of A War of Choice: Britain in Iraq 2003-9. The Daily Telegraph’s Baghdad and Gulf correspondent for five years, he was an embedded reporter during the Iraq invasion, winning the British equivalent of the Pulitzer prize for his reporting. Most recently he has been the Washington Post’s Islamic world correspondent. He is a fellow of the Centre for Middle Eastern Studies at Harvard University, and is working on a history of the Afghan war.

Peter Oborne, the Daily Telegraph‘s chief political commentator and author of The Rise of Political Lying and The Triumph of the Political Class.

Sir Jeremy Greenstock is chairman of the UN Association in the UK, the strategic advisory company Gatehouse Advisory Partners Ltd and Lambert Energy Advisory Ltd. He was a career diplomat from 1969 to 2004, developing specialisations in the Middle East, Transatlantic Relations and the United Nations. He served as UK Ambassador to the UN in New York from 1998 to 2003 and as UK Special Envoy for Iraq, based in Baghdad, from 2003 to 2004.

The sheer scope and significance of the revelations is shocking.  Among them are great abuses of power, corruption, lies and war crimes. Yet there are still some who insist WikiLeaks has "told us nothing new".  This collection, sourced from a range of publications across the web, illustrates nothing could be further from the truth.  Here, if there is still a grain of doubt in your mind, is just some of what WikiLeaks has told us:

* American planes bombed a village in Southern Yemen in December 2009, killing 14 women and 21 children (see Amnesty)

* The Secretary of State’s office encouraged US diplomats at the United Nations to spy on their counterparts by collecting biographic & biometric information (see Wired.com)

* The Obama administration worked with Republicans to protect Bush administration officials facing a criminal investigation into torture (see Mother Jones)

* A US Army helicopter gunned down two Reuters journalists in Baghdad in 2007 (see Reuters)

* US authorities failed to investigate hundreds of reports of abuse, torture, rape and even murder by Iraqi police and soldiers (see the Guardian)

* In Iraq there were scores of claims of prison abuse by coalition forces even after the Abu Ghraib scandal (see the Bureau of Investigative Journalism)

* Afghan President Hamid Karzai freed suspected drug dealers because of their political connections (see CBS News)

* Israeli Prime Minister Benjamin Netanyahu expressed support for the concept of “land swaps” (see Yahoo News)

* The United States was secretly given permission from Yemen’s president to attack the Al-Qaeda group in his country (see the Guardian)

* Then-Secretary of Defence Donald Rumsfeld and his top commanders repeatedly knowingly lied to the American public about rising sectarian violence in Iraq beginning in 2006 (see the Daily Beast)

* The US was shipping arms to Saudi Arabia for use in northern Yemen even as it denied any role in the conflict (see Salon.com)

* Saudi Arabia is one of the largest origin points for funds supporting international terrorism (see the Guardian)

* A storage facility housing Yemen’s radioactive material was unsecured for up to a week (see Bloomberg)

* Israel destroyed a Syrian nuclear reactor in 2007, fearing it was built to make a bomb (see the Sunday Times)

* Top officials in several Arab countries have close links with the CIA (see the Peninsula)

* Swiss company Trafigura Beheer BV dumped toxic waste at the Ivorian port of Abidjan, then attempted to silence the press from revealing it by obtaining a gagging order (see WikiLeaks)

* Pakistan’s government has allowed members of its spy network to hold strategy sessions on combating American troops with members of the Taliban (see the New York Times)

* A stash of highly enriched uranium capable of providing enough material for multiple "dirty bombs" has been waiting in Pakistan for removal by an American team for more than three years (see CBS News)

* US military Special Operations Forces have been conducting offensive operations inside Pakistan, despite repeated denials from US officials (see the Nation)

* China was behind the online attack on Google (see ZDNet)

* North Korea is secretly helping the military dictatorship in Myanmar build nuclear and missile sites in its jungles (see CBS News)

* The Indian government "condones torture" and systematically abused detainees in the disputed region of Kashmir (see CBS News)

* The British government has been training a Bangladeshi paramilitary force condemned by human rights organisations as a "government death squad" (see the Guardian)

* BP suffered a blowout after a gas leak in the Caucasus country of Azerbaijan in September 2008, a year and a half before another BP blowout killed 11 workers (see the Guardian)

* Saudi Arabia’s rulers have deep distrust for some fellow Muslim countries, especially Pakistan and Iran (see CBS News)

* Saudi Arabia’s King Abdullah repeatedly urged the United States to attack Iran (see the Guardian)

* Iranian Red Crescent ambulances were used to smuggle weapons to Lebanon’s militant Hezbollah group during its 2006 war with Israel (see CBS News)

* Dozens of US tactical nuclear weapons are in Germany, the Netherlands and Belgium (see * The Libyan government promised "enormous
repercussions" for the UK if the release of Abdel Baset al-Megrahi, the Lockerbie bomber, was not handled properly (see CBS News)

* Pope Benedict impeded an investigation into alleged child sex abuse within the Catholic Church (see MSNBC)

* Sinn Fein leaders Gerry Adams and Martin McGuinness carried out negotiations for the Good Friday agreement with Irish then-prime minister Bertie Ahern while the two had knowledge of a bank robbery the Irish Republican Army was planning to carry out (see CBS News)

* Anglo-Dutch oil giant Royal Dutch Shell PLC has infiltrated the highest levels of government in Nigeria (see the Guardian)

* A US official was told by Mexican President Felipe Calderon that Latin America "needs a visible US presence" to counter Venezuelan President Hugo Chavez’s growing influence in the region (see Yahoo News)

* Cuba’s economic situation could become "fatal" within two to three years (see Business Week)

* McDonald’s tried to delay the US government’s implementation of a free-trade agreement in order to put pressure on El Salvador to appoint neutral judges in a $24m lawsuit it was fighting in the country (see the Guardian)

* British officials made a deal with the US to allow the country to keep cluster bombs in the UK despite the ban on the munitions signed by Gordon Brown (see Politics.co.uk)

* The British government promised to protect America’s interests during the Chilcot inquiry into the Iraq war (see the Guardian)

* The US government was acting on behalf of GM crop firm Monsanto in 2008, when the US embassy in Paris advised Washington to start a military-style trade war against any European Union country which opposed genetically modified (GM) crops (see the Guardian)

* Pfitzer tested anti-biotics on Nigerian children, contravening national and international standards on medical ethics (see Medical News Today)

* Prisoners at Camp Delta (Guantanamo Bay) were denied access to the Red Cross for up to four weeks (see the Telegraph)

* More than 66,000 civilians suffered “violent deaths” in Iraq between 2004 and the end of 2009 (see the Telegraph)

* Russia is a “virtual mafia state” with rampant corruption and scant separation between the activities of the government and organised crime (see the Guardian)

* The Obama administration tried to “sweet-talk” other countries in to taking Guantanamo detainees, as part of its (as yet unsuccessful) effort to close the prison (see the New York Times)