Oleh Baturyn could hear the shouts of a large group of angry protesters from the open window of the room where he was being held captive. It was March 13, 2022, just weeks after Vladimir Putin had ordered his full-scale invasion of Ukraine. Demonstrators had gathered outside the regional administration building in Kherson - a port city in southern Ukraine that had quickly fallen to the Kremlin's army - and were chanting "Putin is a d***head", as well as demanding the withdrawal of Russian troops from their country. All of a sudden, he was overcome with an uncontrollable urge to...