P. W Singer

Peter Singer's new book, Children at War, takes a look at the use of children as soldiers -- which happens much more than many of us would like to think. From Afghanistan, Thailand and Lebanon to Sudan, Kosovo and Sierra Leone, Singer examines how children are recruited and indoctrinated into warfare.

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.