Borys Romanchenko, a 96-year-old Holocaust survivor who went through four concentration camps during World War II, was killed Friday by a Russian strike in Kharkiv, Ukraine. His death was confirmed by the Buchenwald Memorial, which said it was “stunned” by the news. Romanchenko, who survived the Buchenwald, Peenemünde, Dora, and Bergen-Belsen camps, later served as vice president of the Buchenwald-Dora International Committee and worked “intensively on the memory of Nazi crimes,” the Buchenwald Memorial said. Borys Romanchenko, 96, survived four Nazi concentration camps: Buchenwald, Peenemünde, Mittelbau-Dora, Bergen-Belsen. He lived his quiet life in Kharkiv until recently. Last Friday a Russian...