There is a great Perspective article in The Washington Post explaining the ways in which that now notorious meeting that Trump Jr./Manafort/Kushner had with the Russians in June, 2016 was anything but nothing.  It is written by a former CIA intelligence officer and it clearly and concisely lays out the way the meeting conformed to standard Russian tradecraft and the value that it brought to the Russians.  Very well worth the read.

Trump Jr.’s Russia meeting sure sounds like a Russian intelligence operation