There is an impulse in Europe’s political discourse, by no means the exclusive property of the left, that assumes nothing bad happens in the world without it being somehow the fault of the west in general and the US in particular. This is the mindset that casts Saddam Hussein as a victim, Hugo Chávez a hero and Russia’s Vladimir Putin as a bulwark against Nato expansionism. The mass murder of Parisian concertgoers and Russian tourists may be crimes, but they are surely also the product of unprincipled great power intervention.

Listen to Jeremy Corbyn. The leader of Britain’s Labour party cannot censure the outrages of extremist jihadis without reference to the supposed crimes of the US: the siege of Falluja, say, or killing rather than arraigning Osama bin Laden. “We have created a situation where some of these forces have grown,” was Mr Corbyn’s reflection on the slaughter in Paris.

There is no shortage of criticisms to be made of the west — and they do not start or end with the invasion of Iraq. I find it shocking that Saudi Arabia is still treated as a staunch ally even as it exports the extreme version of Islam that informs the murderous credo of the jihadis. Then there is a welcome afforded Egypt’s president Abdel Fattah al-Sisi whose violent repression of the Muslim Brotherhood opens the door to Isis. With its oil and autocrats, the Middle East is a graveyard for anything pretending to be a principled foreign policy.