Many of the 166 Guantanamo Bay detainees are now on a hunger strike and have been since early February. Karen Greenberg, director of the Center on National Security at Fordham University, discusses the strike and talks about a new report that found that the U.S. did engage in torture after 9/11. 

A new report by the non-partisan Constitution Project concludes that, without a doubt, the United States engaged in “the practice of torture” in the years after the attacks on Sept. 11, 2001. Currently at Gitmo, 43 of the prisoners are on hunger strikes, in protest of what they see as the unethical treatment of prisoners and their indefinite detention without trial.

Karen Greenberg, director of Fordham Law School’s Center on National Security, discusses the controversial legal theories behind the Obama Administration’s targeted killing program.

A 16-page memo obtained by NBC News was apparently the legal rationale for the killing of American citizen Anwar Al-Awlaki, an Al Qaeda operative. The memo is also the clearest statement yet of American policy on the use of drone aircraft.

Katherine Bigelowe’s latest film "Zero Dark Thirty" comes out in limited release this week, but critics have already honed in on what’s become the film’s most controversial talking point: its depiction of torture. Karen Greenberg, director of the Center on National Security at Fordham Law School and editor of “The Torture Papers," explains.

How did this hot issue become a non-issue? Has the country forgotten about the Patriot Act? Or do the candidates just hope that we have? Karen Greenberg, director of the Center on National Security at Fordham University's School of Law takes a closer look as part of The Takeaway's Don't Mention It Series.

Closing a controversial three-year investigation, Attorney General Eric Holder announced yesterday that no one will be prosecuted for harsh interrogation techniques carried out by the CIA that resulted in the deaths of two prisoners.

Karen Greenberg, director of the Center on National Security at Fordham Law School, discusses the start of the Guantanamo terror trial and the revelation that a top Al-Qaeda operative was a CIA double-agent.

Attorney General Eric Holder outlined the United States’ legal defense of using lethal force against U.S. citizens overseas if that citizen is posing a terrorist threat. Holder’s speech, delivered Monday afternoon at Northwestern University, argued in part that the U.S. Constitution’s definition of due process defends the use of lethal force, even without the written consent of the president.

Until now, no legal defense was given for the U.S. mission in Yemen which killed al-Qaeda’s leading figure Anwar al-Awlaki. Al-Awlaki, who was born in the US, was the radical cleric who successfully took al-Qaeda’s message to YouTube.

Chief Washington correspondent for The New York Times, David Sanger, and Director of the Center on National Security at Fordham Law School, Karen Greenberg, discuss the foiled assassination plot to kill the Saudi ambassador.

Karen Greenberg, executive director of the Center on Law and Security at NYU, discusses the hearings, being held right now by NY Rep. Peter King, which address the national security threat of homegrown terror and the radicalization of Muslim Americans. 

→Watch and chat about the hearings at It's a Free Country.

Karen Greenberg, executive director of the Center on Law and Security at NYU, discusses the path that led the United States to Osama bin Laden and how interrogation led to critical information.

→ Listen, Read a Recap and Join the Conversation at It's A Free Country.

Karen Greenberg, executive director of the Center on Law and Security at NYU Law School, reviews the latest release of documents from WikiLeaks.

According to a New York Times article released today, the Obama administration is planning to prosecute Guantanamo detainees in military commission trials. This follows decisions by Congress to prevent these prisoners from being brought to the U.S. and tried in federal courts.

Ahmed Ghailani, the first Guantanamo detainee to be tried by a U.S. civilian court, was acquitted on all but one of more than 280 charges Wednesday by a jury in U.S. federal court in Manhattan. Karen Greenberg, executive director of the Center on Law and Security at NYU Law School, discusses the Ghailani mixed verdict and how it plays into the ongoing debate about civilian versus military trials.

Yesterday the first Guantánamo detainee to be tried in a federal civilian court was acquitted of all but one of the charges against him. In total Ahmed Khalfan Ghailani faced nearly 300 charges of conspiracy and murder in the 1998 terrorist bombings of the U.S. embassies in Nairobi, Kenya and Dar es Salaam, Tanzania.

Karen Greenberg, executive director of the Center on Law and Security at NYU Law School checks in on what's happening with Guantanamo policy.

Following up on our coverage of Khalid Sheikh Mohammed's trial in civilian court, Karen Greenberg, executive director of the Center on Law and Security at NYU Law School and author of The Least Worst Place: Guantanamo's First 100 Days, explains the history and use of military tribunals.

Attorney General Holder's decision to try terror suspects in federal courts marks a turning point in the approach to combating terrorism, and the future of the Guantanamo base. Karen Greenberg, executive director of NYU's Center on Law and Security and the author of The Least Worst Place: Guantanamo's First ...