Obama moved Bush’s wars from land to air. Trump continued that trend. Biden seems inclined to advance the same trend even further. But a few things might build public opposition.

As murder is condemned in public opinion and in law, so must collective murder be It calls for a special kind of military courage for a former chief of the general staff to cry out – as Richard Dannatt did (Face to Faith, 12 November) – for a spiritual answer to the good soldier in Afghanistan who has done what ...