When he visits Kiev, the Foreign Secretary should remember the threats posed by Nato's drive eastwards

Before making his speech on policy towards Russia in Kiev, Ukraine, later this week David Miliband would do well to ponder some wise advice from a great predecessor. Lord Salisbury, Foreign Secretary and Prime Minister in the days of the British Empire, dispensed immense global power; but that did not mean that he liked playing about with that power.

Faced with proposals for British policy that he understood to be deeply damaging to the interests of other great powers, Salisbury would look his colleagues in the eye and ask simply: “Are you really prepared to fight? If not, do not embark on this policy.”

If the events of the past fortnight in Georgia have demonstrated one thing clearly, it is that …