IMO the case was overcharged in the matters of "aiding the enemy" and the espionage statute. I think Manning is too trivial a person for that to have been his goal. Nevertheless, the BBC and other unfriendly propaganda organizations are drooling over the chance to bash the US for prosecuting a sworn member of the US Army for having massively broken his oath of enlistment and all the undertakings that he made to safeguard classified information.
He felt the army reveled in its role of killing? What did he think he was joining when he voluntarily enlisted, the Boy Scouts? I think that you Australians and Canadians and Brits would feel quite different if this were one of your "soldiers." Do you think that your people do not kill and keep secrets?
IMO opinion he will receive twenty years, will be given a dishonorable discharge and transfered as a civilian prisoner to the Federal Bureau of Prisons where he will do "hard time."
He will have lots of friends there.