Oppenheimer, the epic new movie directed by Christopher Nolan, takes audiences into the mind and moral decisions of J Robert Oppenheimer, leader of the team of brilliant scientists in Los Alamos, New Mexico, who built the world’s first atomic bomb. It’s not a documentary, but it gets the big historical moments and subjects right. The issues that Nolan depicts are not relics of a distant past. The new world that Oppenheimer helped to create, and the nuclear nightmare he feared, still exists today. Russian president Vladimir Putin is threatening to use nuclear weapons in his war in Ukraine. Iran is...