One of the dangers of the CIA-Trump standoff is that the intelligence community will keep vital information from the president, endangering the nation. You can read about it here:
Another possibility is that they are actively seeking to damage his presidency and drive Trump out of office. Please listen to Dennis Kucinich speak on this very issue:
The CIA has overthrown the governments of several countries over the years, so they know how to do it. They are a loose cannon whose actions have greatly damaged our country. As JFK suggested, they should be broken into a thousand pieces and scattered into the winds.
What is going on is a coup by the military-industrial-information complex. By now, everyone should realize the US no longer is a democracy.