Three New York Times Reporters, Raymond Bonner, Don Van Natta and Amy Waldman, examine Questioning Terror Suspects in a Dark and Surreal World:

Senior American officials said physical torture would not be used against Mr. Mohammed, regarded as the operations chief of Al Qaeda and mastermind of the Sept. 11 attacks. They said his interrogation would rely on what they consider acceptable techniques like sleep and light deprivation and the temporary withholding of food, water, access to sunlight and medical attention.

You think that's not so bad, right? Read on:

American officials acknowledged that such techniques were recently applied as part of the interrogation of Abu Zubaydah, the highest-ranking Qaeda operative in custody until the capture of Mr. Mohammed. Painkillers were withheld from Mr. Zubaydah, who was shot several times during his capture in Pakistan. Routine techniques include covering suspects' heads with black hoods for hours at a time and forcing them to stand or kneel in uncomfortable positions in extreme cold or heat, American and other officials familiar with interrogations said. Questioners may also feign friendship and respect to elicit information. In some cases, American officials said, women are used as interrogators to try to humiliate men unaccustomed to dealing with women in positions of authority.

Have you wondered where Ramzi Binalshibh was taken? Now we know. A secret CIA base in Thailand. Ouch.

Intelligence officials also acknowledged that some suspects had been turned over to security services in countries known to employ torture. There have also been isolated, if persistent, reports of beatings in some American-operated centers. American military officials in Afghanistan are investigating the deaths of two prisoners at Bagram in December.

Here are some details provided by CIA officials on the treatment of one detainee whom they thought had information.

What is known is that the questioning was prolonged, extending day and night for weeks. It is likely, experts say, that the proceedings followed a pattern, with Mr. Faruq left naked most of the time, his hands and feet bound. While international law requires prisoners to be allowed eight hours' sleep a day, interrogators do not necessarily let them sleep for eight consecutive hours.

Mr. Faruq may also have been hooked up to sensors, then asked questions to which interrogators knew the answers, so they could gauge his truthfulness, officials said.

The Western intelligence official described Mr. Faruq's interrogation as "not quite torture, but about as close as you can get." The official said that over a three-month period, the suspect was fed very little, while being subjected to sleep and light deprivation, prolonged isolation and room temperatures that varied from 100 degrees to 10 degrees. In the end he began to cooperate.

Techniques vary from country to country.

American and foreign intelligence officials have acknowledged that suspects have been sent to Jordan, Syria and Egypt. In addition, Moroccan intelligence officials have questioned suspects and shared information with their American counterparts.

In one case in Morocco, lawyers for three Saudis and seven Moroccans accused of plotting to blow up American and British ships in the Strait of Gibraltar last summer said their clients were tortured. Moroccan officials denied that physical torture was used but acknowledged using sleep and light deprivation and serial teams of interrogators until the suspects broke.

....In Cairo, leaders of several human rights organizations and attorneys who represent prisoners said torture by the Egyptian government's internal security force had become routine. They also said they believed that the United States had sent a handful of Qaeda suspects to Egypt for harsh interrogations and torture by Egyptian officials.

"In the past, the United States harshly criticized Egypt when there was human rights violations, but now, for America, it is security first — security, before human rights," said Muhammad Zarei, a lawyer who had been director of the Cairo-based Human Rights Center for the Assistance of Prisoners."

Ouch again.