The first year of the Obama Administration is almost over, yet many mysteries surrounding the so-called “dark side” of the “war on terror” remain unsolved. Here are ten:

Did former Vice-President Cheney know the full, clinical details of the Bush Administration’s interrogation and detention program for terror suspects? Did he have a supervisory role? How much did President Bush know about the alleged abuse? Cheney has said that the former President “knew a great deal about the program” and “basically authorized it.” Did he know, for instance, that one suspect was waterboarded a hundred and eighty-three times? Did he know that another died in C.I.A. custody after having been left to freeze overnight? If he did know, what was his reaction? The C.I.A. destroyed ninety-two videotapes of interrogation sessions. What exactly was on the tapes, and why were they destroyed? Are there written transcripts describing what was on the tapes? Did the tapes document potential evidence of a crime? If so, did their destruction constitute obstruction of justice? And if so, which officials authorized the tapes’ destruction? Have all the former C.I.A. prisoners been accounted for? Some seem not to have been sent to Guantánamo when the C.I.A.’s black-site prisons were closed, in 2006. Instead, it appears they may have been sent to other countries, including Egypt, Jordan, and Libya. If so, who were these prisoners, and where are they now? Who provided the “muscle” in the C.I.A. interrogation and detention program? Were the notional global “hit squads” authorized, or made operational? Were their activities fully briefed to Congress? Were they staffed by C.I.A. officers, Special Operations officers, private contractors, or others? If there were abuses, will anyone face any consequences? Vice-President Cheney and other defenders of “enhanced interrogation” techniques have insisted that coercion produced intelligence and saved lives. Many other experts have argued that the same information or better could have been obtained by less controversial methods. Will the public ever be able to access the record, in order to judge this on its own? A small handful of politically appointed lawyers during the Bush years approved many forms of prisoner abuse that would previously have been judged criminal. Those lawyers have fanned out to teach, practice law, and, in one case, sit on the federal bench. Will there be professional consequences for any of these lawyers? A report on them by the Justice Department has been pending release for the entire last year. Why has it been so delayed? Several contract psychologists designed and helped to implement the C.I.A.’s program of “enhanced” interrogation techniques. Will these psychologists face professional consequences? They have indicated they would like to tell their story—will they? Who forged the “yellowcake” Niger documents that helped spur the U.S. into the war in Iraq? Who are the chief financiers of terror, and do any of them have state sponsors?

Bonus question: Where is Osama bin Laden?