The mother of murdered US journalist James Foley has offered her support for the family of his fellow hostage Steven Sotloff, who was also killed by the jihadist Islamic State group.
Diane Foley urged the international community to act to protect the remaining hostages held by the militants, adding that the two killed men were like "martyrs".
I've been told at the Nato summit that the intelligence services know exactly who 'Jihadi John' is - or at least are 99.9% certain.
The British aid worker being held by Islamic State is David Haines, a 44-year-old father-of-two from Perth, Scotland.
In a video statement which claims to record his final words US hostage and journalist Steven Sotloff blames US foreign policy for his death.