Margery Hop Wong last saw her older brother Sgt. Yuen Hop in 1943. He was a soldier missing in action, until researchers solved the mystery behind his death.

A fellow survivor, she was a literary and political adviser who helped her husband gain recognition as a singular moral authority on the Holocaust.

World leaders and a dwindling group of survivors joined in a ceremony to mark the 80th anniversary of the liberation of the Nazi death camp by the Red Army.

Speaking at a celebratory rally in Washington, Mr. Musk twice extended his arm out with his palm facing down, drawing comparisons to the Nazi salute.

The home of the death camp’s wartime commandant, Rudolf Höss, which was the subject of the Oscar-winning movie “The Zone of Interest,” will soon welcome visitors.