Britain’s prime minister David Cameron  and his Bulgarian counterpart Boyko Borissov (left) visit Bulgaria’s border with Turkey near the Lesovo crossing point, where they saw the enhanced efforts to secure the European Union’s external frontiers, on Friday.  Photograph: Stefan Rousseau/PA Wire

British prime minister David Cameron’s claim that 70,000 Syrian rebels are ready to fight Islamic State has come under renewed scrutiny following repo(...)

Members of the Free Syrian Army.  Cameron believes there are 70,000 pairs of suitable Syrian boots on the ground. Robert Fisk reckons 70 might be nearer the mark. Photo: Tomas Munita/The New York Times

David Cameron was following patriotic precedent in backing Turkey against Russia following the downing of a Russian aircraft on the Turkish-Syrian bor(...)

Brian Stewart with Prince Charles at a ceremony in June this year honouring D-Day veterans. Photograph: Chris Jackson - WPA Pool/Getty Images

Brian Stewart, who has died aged 93, was a British spy who took a deep interest in Ireland and in his later years became known to history enthusiasts (...)

Members of Parliament are seen attending a session of Parliament in the House of Commons, called to discuss the Syria crisis. Reuters

  The British government’s pledge to intervene militarily in Syria lay in ruins last night after a motion to intervene in principle in (...)

Social media serves up a special sort of security challenge, and one that is often still poorly recognised and understood by governments and la(...)