Thread by @calder_walton

If you’re seeing #Oppenheimer this weekend—it’s a masterpiece— check out these documents from MI5’s dossier on Oppenheimer

First, an FBI liaison report, describing the infamous approach by Chevalier (depicted in the film)

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Second, report about British communist, George Eltenton, also depicted in the film

These two incidents became central to Oppenheimer’s later persecution

The film also depicts the Soviet atom spy, Klaus Fuchs

Here are passages from his MI5 dossier

MI5 vetted him in 1941 for work on the British bomb (TUBE ALLOYS) and then in 1943, when he joined the MANHATTAN Project.

They had no reliable positive evidence to say he was… https://t.co/h3snOp73vQtwitter.com/i/web/status/1…

MI5 then vetted Fuchs again when he returned to Britain after WW2 to work on British atomic research.

Vetting him caused disagreement within MI5— those worried about him being a Soviet agent were later proved correct

Here is Fuchs’ eventual espionage confession to MI5.

I’ve never read anything like it— check it out.

He describes how he used “controlled schizophrenia” to separate his mind into two compartments, one for his espionage for the Soviets, the other for all else.

If you want to… https://t.co/gPCqg2JB4Ftwitter.com/i/web/status/1…