When the Soviet Union invaded Czechoslovakia in 1968, the Moscow stock market did not crash. That is because there was no Moscow stock market. By contrast, the news that Russian troops have taken effective control of Crimea was greeted, yesterday, by a 10 per cent collapse in shares on the Russian market.

This contrast between 1968 and now underlines why talk of a new cold war is misleading. The economic and political context of Crimea in 2014 is entirely different from Czechoslovakia in 1968. Russia no longer has an empire extending all the way to Berlin. The pain of that territorial loss is part of the reason why President Vladimir Putin is fighting so hard to keep Ukraine in Moscow’s much-diminished sphere of influence.

Just as important, the world is no longer divided into two mutually exclusive, and hostile, political and economic systems – a capitalist west and a communist east. After the collapse of the Soviet system, Russia joined the global, capitalist order. The financial, business and social systems of Russia and the west are now deeply intertwined. A new east-west struggle is certainly under way today but it is being fought on entirely different terrain from the cold war – and under different rules.