The attorney of US soldier Private Bradley Manning has described his client as "Young, naive, but good intentioned" during a brief opening statement.
David Coombs said that Manning arrived in Iraq when he was "22-years young".
He was deployed to Iraq with custom dog tags that said "humanist" on the back, with the hope that he could make the country a safer.
The attorney spoke of a formative event on Christmas Eve in 2009, when an explosively-formed projectile (EFP) missed a US convoy but struck a car with an Iraqi family.
He was 22-years old. He was young. A little naive, but good intentioned in that he was selecting information that he thought would make a difference.
He is not the typical soldier.
He was a humanist.
Coombs said Manning could not forget the Iraqi civilians hurt and killed in the attack, and how he "started to struggle".
He said Manning began to select specific information that he believed the public should see, that could not be used against the US, and "would make the world a better place".
More top news
Commuters were also warned to expect travel chaos as Doris gathered speeds of nearly 90mph.
A man with 62 penalty points on his licence is among thousands of motorists allowed to drive despite exceeding the limit warranting a ban.
Storm Doris is set to bring severe weather across much of the UK on Thursday as heavy rain and strong winds push in from the west.