For a month the two men could not tell their psychologist what had happened to them, only that it was horrible beyond words. “If there’s hell somewhere, it’s worse than that,” said one. The Ukrainian soldiers, aged 25 and 28, had been in Russian captivity — one for one month, the other for three. After their return in a prisoner swap they had been referred to Anzhelika Yatsenko, 41, a psychologist in Poltava who deals with troubled young men. They were suicidal. The younger one had tried to kill himself. “I knew from previous cases they had probably been tortured,”...