The use of drones, or unmanned aerial vehicles (UAVs), in war and counter-terrorism operations remains a highly controversial issue both domestically and abroad. A recent string of events, however—including a leaked Justice Department document, the discovery of a secret drone base in Saudi Arabia, and President Obama's nomination of John Brennan as CIA Director—has brought the issue to the forefront. As the debate over the ethics and constitutionality of drone warfare takes center stage, Brookings experts examine the legal and political implications of drone technology.