There’s video of two of the four, upon capture, singing like birds. Obviously, the Russian FSB, Mossad, CIA, MI6 know what they’re doing from many decades of experience. They are the pros, you and I don’t really know. The terrorists were brutalized after their initial interrogation to confirm and expand upon their initial statements. Since these terrorists had zero ideological motivation to withhold information, perhaps the torture wasn’t necessary. We just don’t know.
https://freerepublic.com/focus/f-news/4226560/posts
Don't know. Suppose we should try the methods on Mr. "Unwittingly" James Clapper. for further study?