From the NYTimes today, an article about Iran:
Top Reformers Admitted Plot, Iran Declares
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.
Confessions! What a surprise! Yes, torture is a very effective instrument for uncovering the truth. Ask Dick Cheney.