David Gergen: “He called 2014 a breakthrough year.”

We're entering some kind of the most dangerous days of Donald Trump's presidency. He is erratic.

I think this the very idea that in 2024, we may have two men running against each other Biden and Trump, who would both be in their 80s if elected, that it too is enough to say, well, what are we doing here?

It would have almost Shakespearean qualities to it.

I think the turning point that came were the midterm elections. The fever broke with those midterm elections. And what we've seen since then is a steady decline in Trump's credibility and in his position with the American people, and a…