I've posted some things here about the arguments for torture. I find them unpersuasive. Many, like certain former American VP, his pundit defenders, and the current members of the Iranian government, do not:
The government has made it a practice to publicize confessions from political prisoners held without charge or legal representation, often subjected to pressure tactics like sleep deprivation, solitary confinement and torture, according to human rights groups and former political prisoners. Human rights groups estimate that hundreds of people have been detained.