Julian Assange’s Arrest Should Worry Anyone Who Cares About Freedom of the Press

Julian Assange’s strange seven-year residence in Ecuador’s London embassy has ended, and Assange, thanks to the American president he helped elect, is now in British custody facing a US extradition request. The question now is what the freshly unsealed Trump Justice Department indictment against him means, and doesn’t mean—for Assange, for the British courts, which must decide whether to hand him over, and for American press freedom.

Compared with the worst that Assange and his supporters have always feared—black-hooded rendition, indictment under the Espionage Act, the death penalty—the indictment, filed...