On 17 July 2003, four months in to the illegal war against Iraq and two days after appearing before the parliamentary foreign affairs select committee, biological weapons expert David Kelly died after swallowing up to 29 painkillers and cutting his left wrist with a knife he’d had since childhood.

Rhondda-born Kelly had been hauled before the committee to answer questions about conversations he’d had with BBC journalist Andrew Gilligan, who went on to accuse the Labour government of ‘sexing up’ the case for war in its infamous ‘dodgy dossier’; and to out Kelly as his source.

Eighteen years on let’s take stock of Blair and Bush’s war against Iraq.

Population-based studies put the Iraqi death toll at one million. Nearly two million are refugees and 1.6 million are internally displaced out of a population of 41 million. One hundred and seventy nine members of the British armed forces lost their lives.

The cost of the war to British tax payers from 2003 to 2009, according to the Ministry of Defence, was £8.4 billion.

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The decision to dismantle the state soon after invasion, lead to a power vacuum and allowed al-Qaeda to take root in Iraq, first in the Sunni triangle of western Iraq, under the leadership of Abu Musab al-Zarqawi, who unleashed a war on the entire Shi’ite population. Civil war ensued.

Ten years later Abu Bakr al-Baghdadi turned the terrorist organisation into the terrorist Islamic State(IS aka ISIL, ISIS, and Daesh) headquartered in Raqqa, Syria. The disintegration of Syria, already weakened by years of civil war, was assured.

Syrian deaths stand at 600,000. Five million refugees have left the area into Lebanon, Turkey, Jordan and Egypt. Six million Syrians are internally displaced. Lebanon is on the verge of collapse.

Meanwhile, Islamic State may have been defeated in Syria and Iraq but its remaining 40,000 fighters and associates have sprung up in Nigeria under the banner of Boko Haram, in Mali, Chad, Mozambique and Libya, among other African countries.

Existing land disputes between pastoralists and farmers make it easy for the terrorists to gain a foothold to the detriment of thousands of innocent people kidnapped, raped and forced to flee their homes.

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IS have been targeting Asia too. Areas of instability, including the Pakistan-Afghanistan border, offer safe havens and money-making opportunities. Indonesia, Malaysia and the Philippines have become destinations for hundreds of foreign, battle-hardened IS fighters.

And where are the many thousands of refugees heading to escape the mayhem? You’ve guessed it. Decisions have consequences.

Tony Blair, former Middle East peace envoy, advisor to dictators around the world, with a net worth of £50 million, must answer in a court of law for his decision to go to war with Iraq if we are to avoid more bloodshed.

Likewise, if we, as citizens do not pursue this objective to its conclusion, then we too share responsibility for the actions of the UK Government. We owe that to the family of David Kelly at the very least.

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