In the wake of 9/11 when just under 3,000 people were cruelly killed, Bush and Blair reacted by unleashing the Shock and Awe War on Iraq.
Over a decade later the world is still mourning the tragic aftermath of 123,000 Iraqi civilians and 50, 000 combatants, 179 UK and 4,000 US service men and women dead, and asking why terrorism in the West has increased?
The launch of the Shillcote Inquiry seemed to signal that the shambles of Iraq, Afghanistan and Libya had brought some sanity to our politics in the Middle East. Sadly not.
With the tears of Afghan survivors hardly dry and the UK defence budget less of a priority than foreign aid, Mr Cameron still seems determined to become a Blair mark two.
Unfazed by his failure to persuade Parliament to bomb Assad in Syria two years ago, now he claims it is our duty to bomb ISIS – the other side, in support of French sentiment for their tragic losses in Paris which he says is to prevent terrorism on our streets.
Recent history has, surely, taught us that waging war in the Middle East, or indeed anywhere, fails to deliver the expected result, but with Isis dug into residential areas, ready and awaiting attacks well announced by our Parliament, failure is almost assured.
The bombing, which no doubt will be devastating, will inevitably cause collateral damage which will have entirely the reverse effect from the desired one.
It will recruit more terrorists than it eliminates. It will agitate moderate Muslims and create even more refugees, some of whom will be militants and many who we will probably have to accommodate one way or another.