That's giving him a lot of credit, I think some guy on Breitbart or Fox put the idea in his head.
Edit: jonnyfive Oh yeah, it's in this very article, I just hadn't read far enough into the CNN piece yet, but check it:
The official pointed to a story on the conservative website Breitbart News that was circulating in the West Wing, which followed up on comments from radio talk show Mark Levin claiming Obama worked to undermine Trump's presidential campaign and his administration, including various investigations on Russia and possible ties between Russians and Trump associates.
That story infuriated him, the official said.
The quality of writing is much better than I think is typical of a CNN article, they're really having a go at POTUS. And a large hunk of the country still doesn't think anything's particularly odd about the set DJ Trump's spinning... hmm. I'm kinda worried. I kid around a lot on here, but guys, we're in some deep anti-intellectual doodoo. I mean, it's not like you can really take these quotes out of context. Unless Trump's tweets aren't actually written by Trump, and that's too grand of a conspiracy theory to merit consideration.
Sooner or later, the people hacking into his unsecured personal device are going to get careless, and then things are really going to heat up. I don't think it'll be too long now.