Robert Mueller is finishing up his exhaustive investigation into all things relating to Donald Trump’s 2016 presidential campaign.

We don’t yet know what the special counsel has determined. However, the president’s reaction in advance of the report’s conclusion might be offering some clues.

Trump set some sort of unofficial personal record this weekend with a Twitter torrent that laid waste to a number of targets: Mueller, of course; the late John McCain; the “fake news” media; Democrats, naturally.

I just don’t know how this is the conduct of someone who is confident that the special counsel is going to exonerate him. We are witnessing a possible unraveling of an individual who well might be petrified at the prospect that the special counsel is about to deliver the goods on him.

It’s not a pretty sight.

The trashing of the late Arizona Republican senator, McCain, is especially troubling. Hey, I have written about this extensively already. I just cannot get past the notion that the president of the United States would feel so threatened by the memory of a man he now says he never has liked.

And why in the world would he disparage, denigrate and dismiss someone who served with valor and, yes, heroism in defense of his country? Why now, seven months after McCain died of brain cancer?

The specter of the pending Mueller report being sent to Attorney General William Barr looms large in all of this.

Donald Trump likely doesn’t know what Mueller has concluded. He is reacting seemingly on some sort of concern that Mueller is going to inflict potentially mortal wounds on the president, his closest aides, even his family.

This is all quite nerve-wracking. I’m just a chump blogger. I also am someone who was shocked beyond measure that Trump got elected president of the United States. Still, my nerves are beginning to get the better of me as I await the findings of the special counsel.

Therefore I only can imagine what is occurring within the president’s nervous system.