The murder of an injured Afghan fighter by a Royal Marine has raised concerns about the pressures our armed services face on the frontline.
Could it have played a part or in some way explain the experienced commando's actions?
ITV News Correspondent Neil Connery put that question to a panel of experts in legal, military and mental health matters, who discuss the impact of the killing.
A commando in the Royal Marines has been convicted of the killing of a seriously injured Afghan fighter, described as "an execution".
Still images and audio recordings of three Royal Marines allegedly murdering a captured Afghan man in 2011 have been released.