Not at all in the same league as a possible US attack on Greenland, but the cod wars of the 1970s between the UK and Iceland are an example of conflict between two Nato members (Analysis, 6 January). Ironically, it was largely political pressure on the UK from the US, in defence of the Nato alliance, that led Britain to concede fishing rights, ending the cod wars.
Sarah Palmer
West Malling, Kent
• As usual, Shakespeare says it better than anyone: “Oh, it is excellent to have a giant’s strength, but it is tyrannous to use it like a giant” (Measure for Measure).
Josephine Billingham
Brighton
