President Barack Obama has assured CIA operatives that they will not be prosecuted for putting terror suspects in shackles, stripping and waterboarding them. On the contrary, Obama's attorney general has offered the operatives legal help if anyone else takes them to court over the harsh interrogation methods that were approved by the Bush administration. The offer of presidential support, however, did not extend to those outside the CIA who approved the so-called enhanced interrogation methods or any CIA officers who may have gone beyond what was allowed in four legal memos written in 2002 and 2005 that the Obama administration released Thursday. Obama's stand – unveiling the secret memos and condemning their contents while absolving those who carried them out – splits the middle on a politically sensitive issue. His decision was criticized both by liberals who say torture is going unpunished and conservatives who argue the CIA sometimes needs harsh tactics to prevent terror attacks and the details should stay secret. Issued in the aftermath of the Sept. 11 terrorist attacks, the Bush administration memos authorized keeping detainees naked, in painful standing positions and in cold cells for long periods of time. Other techniques included depriving them of solid food and slapping them. Sleep deprivation, prolonged shackling and threats to a detainee's family also were used. In releasing the documents, the most comprehensive accounting yet of interrogation methods that were among the Bush administration's most closely guarded secrets, Obama said he wanted to move beyond “a dark and painful chapter in our history.” Parts of the four memos were blacked out, and past and present CIA officials had pressed unsuccessfully for larger portions of the documents to be kept secret. Some critics argued that the release of the memos would make the United States less safe. Michael Hayden, who led the CIA under President George W. Bush, said CIA officers now will be more timid and allies will be more reluctant to share sensitive intelligence. “If you want an intelligence service to work for you, they always work on the edge. That's just where they work,” Hayden said. Now, he argued, foreign partners will be less likely to cooperate with the CIA because the release shows they “can't keep anything secret.” On the other side, human rights advocates argued that Obama should not have assured the CIA that officers who conducted interrogations would not be prosecuted if they used methods authorized by Bush lawyers in the memos. Obama disagreed, saying in a statement, “Nothing will be gained by spending our time and energy laying blame for the past.” The Bush administration memos describe the tough interrogation methods used against 28 terror suspects, the fullest government accounting of the techniques to date. They range from waterboarding _ or simulated drowning _ to using a plastic neck collar to slam detainees into walls. Other methods were more psychological than violent. One technique approved but never used involved putting a detainee who had shown a fear of insects into a box filled with caterpillars. Even as they exposed new details of the interrogation program, Obama and Attorney General Eric Holder offered the first definitive assurance that the CIA officials who were involved are in the clear, as long as their actions complied with the legal advice at the time. Holder went further, telling the CIA that the government would provide free legal representation to its employees in any legal proceeding or congressional investigation related to the program, and would repay any financial judgment. “It would be unfair to prosecute dedicated men and women working to protect America for conduct that was sanctioned in advance by the Justice Department,” Holder said.