Increasingly, the U.S. military is using unmanned aerial vehicles to wage war, sometimes those UAVs are flown by people based as far away from the front lines as, say, Nevada. How does that technology change the way that wars are fought? That is the theme behind a new book, Wired for War: The Robotics Revolution and Conflict in the 21st Century by P.W. Singer. Singer, a senior fellow and director of the 21st century Defense Initiative at the Brookings Institution, joins us to talk about his new book.