almost as bad as waterboarding
Waterboarding was always a staple in some American and NATO POW training, for instance International LRRP School used to do it.
A telegram channel linked to Wagner paramilitary force said the picture of Fariddun shows how ‘an ordinary interrogation takes place using a military field telephone TA-57, in common parlance ‘Tapik’.
‘By turning the coil…discharges are released through the wires... up to 80 volts, which in turn are connected to the prisoner by the fingers, ears or genitals…
‘For best effect, the captured militant should be poured with water.’
https://www.dailymail.co.uk/news/article-13234973/Russia-isis-moscow-attack-torture-suspects.html