Deliberate leaking is a time-honored government tactic that Trump doesn't understand

Governments have "official" unofficial leaking policies, releasing tons of confidential material to the press without any attribution or public acknowledgement: they leak stuff to maintain good press relations, to test out ideas, to hurt their in-government rivals, or to let information be generally known without having to answer difficult questions about it (for example, letting the press report on "secret" drone strike in Yemen without a press-conference where embarrassing questions about civilian casualties might come up).