For Britain – or America – to try and lay down the law along Russia’s extensive borders is barking mad; to use a tragic plane accident as casus belli equally so. It is nothing but breast-beating machismo. Yet again we lurch towards the woolly-headed daftness of economic sanctions. It is beyond hypocrisy for the west to demand sanctions against Moscow when it happily buys Russian gas and sells Russia guns, ships, Knightsbridge flats and places at Eton. These double-standards are of our hand. According to the commons committee on arms exports, Britain currently sells arms worth £12bn to 27 countries listed by the Foreign Office as “of human rights concern”. It cannot enhance world peace to make Europe’s energy more expensive, Russian loans harder to get or Harrods less accessible to “Putin’s cronies”. Putin could not care less.