Vladimir Putin calls it ‘the greatest geopolitical disaster of the 20th century’, a viewpoint which explains much of his recent behaviour. Few others anywhere in the world, particularly people who live around Russia’s borders, would agree that the collapse of the Soviet Union was anything to lament. From Riga to Tbilisi and from Kiev to Tashkent, Christmas Day 1991, when Mikhail Gorbachev resigned as leader of the USSR and the Red Flag was lowered from the Kremlin, remains a day to celebrate.