Oppenheimer was a vocal critic of The Bomb after the fact, haunted for the rest of his days by the technology he and his fellow scientists had given to politicians who didn’t understand it, or seem to care about the lives that would be lost through its use. Indeed, Nolan at one point makes this point with a blunt hammer when U.S. Secretary of War Henry Stimson strikes the Japanese city of Kyoto off the list of potential targets, partly for its cultural significance, but also because he honeymooned there. (This wasn’t actually in any meeting minutes, but is agreed by many historians to have been part of his decision.)
It is a complicated story to tell, with an even more complicated moral question in the middle. Nolan lays it all out by taking several tacks at once, in different filming styles. Principally, there’s the actual story of The Bomb and the man’s life, including his affair with Jean Tatlock (pointed to here as part of the reason for her eventual suicide). The former is told as a tense race-against-time, as Oppenheimer proceeds while also having to convince the military that the expense and time taken are vital to actually getting it done.
It also follows the hearing into his security clearance post-war. For his criticisms of the bomb, following the drops on Hiroshima and Nagasaki, Oppenheimer was drummed out of the magic circle of U.S. defence by having his credentials - and thus, his seat at the table - rescinded under shady pretexts and accusations of being a Russian Communist spy. Here, it’s a taut thriller, a knot of double-crossing and mistrust and finger-pointing, precipitated by embittered former associate Lewis Strauss of the Atomic Energy Commission (a staggeringly cold-hearted performance by Robert Downey Jr), who had wanted to increase nuclear capabilities. (Oppenheimer had been interested in Communism, but as more an academic idea and a starting point for further thinking, rather than a hard political doctrine).
Becoming increasingly gaunt and haggard across the movie’s marathon run-time, Murphy manages to embody both the scientific fascination at what he is unlocking, as well as the terrifying truth about what it will be used for. He also manages to keep his character enigmatic. Other than his dedication to science, which far outstrips that of his dedication to his marriage (and, indeed, his affairs outside it), and his consuming anxiety about what he’s done afterwards, it’s often hard to know what he’s truly thinking or believes. He also doesn’t aim to make the character a hero, a villain, or even all that likable. He is a mixture of all the questions its subject raises, played with brilliant stress.
It is a vast movie, in length, scope and depth. It asks questions of its lead without demanding that you accept any one answer. Being Nolan, it looks incredible. Oppenheimer’s regret is magnificently articulated, as is the spectacular moment Trinity takes place. The use of black and white for the Strauss sections not only differentiates between stories, but adds a dignified, stark tone. The rakish young Oppenheimer and cooly glamorous parties, meanwhile, amply show the energy, excitement and, ultimately, hubris of being carried off by something so big and important.