Since the post mentions the Convention against Torture, you should have concluded that one deals here with torture by responsible states, probably in modern time, probably UN members. Spanish Inquisition would have been out, as well as Nazi Germany. Try Logician again. He may give a discount to repeat customers.
U.S. Democratic Senator Merkley airs support for Iran nuclear deal (Reuters)
from the article: Rights groups: Shin Bet torturing jailed Palestinians