Peter W. Singer is director of the 21st Century Defense Initiative and a senior fellow in foreign policy at the Brookings Institution. One of the world’s leading experts on changes in 21st century warfare, he was named by President Obama to the US military’s Transformation Advisory Group. He is the author of three award-winning nonfiction books: Corporate Warriors, Children at War, and Wired for War. Singer has been named by the Smithsonian Institution’s National Portrait Gallery as one of the 100 leading innovators in the nation, was featured in the Turner Broadcasting series “26 People to Save the World,” and is one of Foreign Policy Magazine’s Top 100 Global Thinkers. Singer served as coordinator of the Obama 2008 campaign’s defense policy task force. He has worked as a consultant for the US military and the FBI, as well as for video games, movies, and television shows.