I would dismiss this, except:
1) Chait is no lightweight;
2) People I know who have good IC contacts have been saying something close to this for over a year; and
3) The one-on-one meeting with Putin - without any US ears, even a translator - is so over-the-top weird that I can't wrap my head around it. So much of what he does is exactly what Russia wants him to do, including undermining NATO for no reason. I've generally thought that it was conspiratorial to think there was something more here...but what if it can't all be explained by gross incompetence and psychopathology? What if the simplest explanation is actually true?
What if he is a Russian asset?
If the scenario here is only half-true, it will take generations for this country to recover from the Trump years. A quarter, even.
Read it, and tell me that parts don't ring true.
Link: https://nymag.com/daily/intelligencer/2018/07/trump-putin-russia-collusion.html