Cohen: Here's what could happen if Donald Trump fires Robert Mueller

Is Donald Trump preparing to fire Robert Mueller? Is Trump ready to go nuclear on the special counsel, triggering what a senior Republican warns would be “the beginning of the end of his presidency?”
The question is real. Trump has been replacing people and issuing warnings that suggest he is deciding, after months of impatience, to trust himself, dismiss Mueller and shut down the advancing inquiry.
Trump continues to purge his circle. Rex Tillerson yields to Mike Pompeo as secretary