In the aftermath of 9/11, America went to war in Afghanistan and Iraq, but we also embarked on a covert war involving special operations troops, drones dropping bombs on high-level targets, and the harsh interrogation and limited judicial review of detainees at Guantanamo Bay. Now the ongoing secret war has come under increasing scrutiny and criticism. Have we engaged in torture? Have our drones killed too many innocent bystanders? Daniel Klaidman is national political correspondent for Newsweek/Daily Beast and author of Kill or Capture: The War on Terror and the Soul of the Obama Presidency.