We need to get this straight. Vladimir Putin's Russia has invaded a neighbour, annexed territory and put in place a partial military occupation. It seeks to overthrow the president of Georgia and to overturn the global geopolitical order. It has repudiated its signature on a ceasefire negotiated by France's Nicolas Sarkozy and disowned its frequent affirmations of Georgia's territorial integrity. Most importantly: all of this is our fault.

The “our” in this context, of course, refers to the US and the more headstrong of its European allies such as Britain. If only Washington had been nicer to the Russians after the fall of the Berlin Wall. If only the west had not humiliated Moscow after the break-up of the Soviet Union.

Surely we can see now what a provocation it was to allow the former vassal states of the Soviet empire to exercise their democratic choice to join the community of nations? And what of permitting them to shelter under Nato's security umbrella and to seek prosperity for their peoples in the European Union? Nothing, surely, could have been more calculated to squander the post-cold-war peace.