US military whistleblower Bradley Manning's lawyer is seeking the dismissal of 10 of the 22 charges he faces on the grounds they are either unconstitutionally vague or fail to state a prosecutable offence.
David Coombs posted the documents on his website on Wednesday night.
A military judge will consider the motions at a pre-trial hearing on June 6-8 at Fort Meade.
Private Manning, 24, faces the possibility of life in prison if convicted of the most serious charge, aiding the enemy.
He allegedly sent hundreds of thousands of classified diplomatic cables and war logs downloaded from government computers to the WikiLeaks website while working as an intelligence analyst in Baghdad in late 2009 and early 2010.
The defence specifically targets the government's use of the phrases "relating to the national defence" and "to the injury of the United States or to the advantage of any foreign nation."
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