Attorneys for Bradley Manning, the U.S. soldier accused of leaking classified U.S. diplomatic cables to WikiLeaks, are accusing the United States of deliberately trying to prevent Manning from receiving a fair trial. In a new court filing, Manning’s civilian lawyer, David Coombs, says Army prosecutors have blocked access to key evidence assessing the leak’s impact worldwide. News reports have suggested internal government reviews have found the leak caused minimal damage, contradicting prosecutors’ contention that Manning harmed national security and aided U.S. foes. But Coombs says prosecutors have refused to hand over the assessments and misrepresented their contents in court.