There's been semi-serious speculation that Trump might resign before his term is up. He may just get bored or frustrated with all the work. And he's now subject to all kinds of rules that he would never tolerate in his private business, and it's showing.
Also, there was a good discussion of Trump's past and present relationships with the press in today's NY Times. He himself used to be the leaker when he was promoting himself to the New York tabloids (I loved the part about the fake accents, which I quoted in bold below)
I wouldn't doubt for one second that some
of the leaks are authorized by him or are members of his own staff.
There could be multiple reasons for this: Bannon told him to do it, so people would lose faith in the federal government, which he has said that he wants to dismantle.
Trump is creating a noise cloud, either to get constant media attention, or to create a witch hunt in an effort to scrub out people disloyal to him, or to put new rules in place or get rid of whistle-blower protections.
Or he's starting a war with the media, potentially to help Breitbart or other conservative media. They might feel that some of their supporters are influenceable and they only want them watching conservative media, which is notorious for being less than factual. What was the story with Fox news the other day? (I don't even understand the whole narrative, other than Trump screwed up and said Sweden and they're trying to make him look like he didn't.) They interviewed a security advisor "From Sweden," who nobody in Sweden knows...?
Remember: most people rarely watch the news unless something shocking is happening and very few people actually attempt to read the same story from multiple viewpoints. Which I highly suggest everyone do, since then you can easily separate the opinions from the facts, especially if you fact check the details. From personal experience, the media which Trump is calling "Fake News" is typically only filtered or opinionated. I've never really caught any of those media companies pushing news that was actually fake.
Unlike Breitbart, which has been caught completely fabricating critical details multiple times, but it's not as bad as thegatewaypundit, which is a vomiting troll doll dressed up to be a "News Website."