“You have to be adversarial,” Glenn Greenwald tells me yesterday in a George St basement food hall. “You don’t get into this business to be liked.”

For what little the detail may be worth, Greenwald, the journalist who earned a Pulitzer for the pivotal part he played in the Snowden revelations -- the latest of which fuelled a joint investigation into Pine Gap by the ABC and The Intercept, published and broadcast this past weekend -- is himself tremendously likeable. He is, unlike the Democratic National Committee, respectful to basement baristas, he is very fond of a joke and will even agree to pose for selfies with mildly starstruck Crikey reporters.