TIMES LITERARY SUPPLEMENT: The latest issue features Definitions of national security are elastic. After the Battle of Waterloo, the Duke of Wellington judged that the defence of the British homeland rested on two pillars – a strong Royal Navy and a European order “that kept Belgium beyond French control”.

Deep State vs Donald Trump

How accountable are US intelligence agencies to the president and Congress? By Richard Norton-Taylor

A stranger in his own land

Henry James’s return to the United States By Alicia Rix

The Invisible Shell

New light on ‘Captain’ Warner’s weapon of mass destruction By Trevor Pateman

Magical mutability

A poet for yesterday and today By Emma Greensmith