The Prime Minister is "absolutely convinced" it is right not to pay ransoms to terrorist organisations like IS, Good Morning Britain has heard.
David Cameron was speaking after the militant group had threatened to kill a British hostage, but the PM said despite his belief in not paying ransoms, the Government should do "everything we can to help British people when they are taken hostage".
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.