The testimony of Sec. Rumsfeld before the Defense Subcommittee of Senate Appropriations Committee last year explains much of the recent stock price movement in the defense industry. Here is a link to the transcript for reading later http://www.defenselink.mil/speeches/2002/s20020521-secdef.html
In my view, there is no reason to read anything into the recent stock prices of the defense industry companies regarding future actions in Iraq.