Army ethics inspector's death in Iraq ruled suicide

After a three-month inquiry, investigators declared Westhusing's death a suicide. A test showed gunpowder residue on his hands. A shell casing in the room bore markings indicating it had been fired from his service weapon, a 9mm pistol.
Then there was the note.
Investigators found it lying on Westhusing's bed. The handwriting matched his.
The first part of the four-page letter lashes out at Petraeus and Fil. Both men later told investigators that they had not criticized Westhusing or heard negative comments from him. An Army review undertaken after Westhusing's death was complimentary of the command climate under the two men, a U.S. military official said.
Most of the letter is a wrenching account of a struggle for honor in a strange land.
"I cannot support a msn [mission] that leads to corruption, human rights abuse and liars. I am sullied," it says. "I came to serve honorably and feel dishonored. Death before being dishonored any more."