Security Analyst Peter Singer

Singer wrote the new book, Corporate Warriors: The Rise of the Privatized Military Industry. Over the last decade, private companies have provided tactical support, advice, training, security and even intelligence to the military. In the recent war against Iraq, private military employees handled everything from feeding and housing U.S. troops to maintaining sophisticated weapons like the B-2 stealth bomber. The practice raises troubling ethical questions.

He produced the new documentary Truth, War and Consequences (on most PBS stations Thursday, Oct. 9 at 9 p.m.) It's about the infighting between the Pentagon, State Department and White House, before the Iraq war, over the intelligence information about weapons of mass destruction.

Peter W. Galbraith is a former U.S. ambassador to Croatia, and is now professor of national-security studies at the National War College in Washington, D.C. Since the late 1980s he has been studying Iraqi war crimes and has also worked closely with the Kurds, who control a small territory in northern Iraq. He'll talk about the effect of a war on the Kurdish people.