A former British hostage in Iraq has told ITV News how he was unaware of whether he would ever be released during his time in captivity.
Norman Kember was 74 when he was captured in the country, and remained imprisoned for 117 days before his rescue by the British armed forces.
He said despite his ordeal, he felt the experience was toughest on families who did not know whether their loved ones were alive or dead.
Mr Kember, a peace activist, also warned the west to be careful in its approach to "idealistic" young people potentially drawn to extremist groups such as the Islamic State.
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.