A) John Solomon is the guy who keeps putting around Lutsenko's stories unquestioned, so I take his reporting with a grain of salt on Ukraine.
B ) What is the connection between Burisma and BlueStar Strategies? The one page memo doesn't mention Burisma anywhere in it, and there's no indication that's what the meeting was about. The only connection I see in the article is that Solomon refers to BlueStar as Burisma's "American lawyers." I can't independently verify that. There's one other story I can read that links the two firms, which is a New York Times article. That article, however, has some pretty glaring factual errors and doesn't explain the relationship between BlueStar and Burisma either. It also cites an earlier John Solomon article as the source for the connection. Burisma isn't listed as a client on Blue Star's company site. Blue Star isn't mentioned anywhere on Burisma's site.
The only connection that Solomon cites is that Hunter Biden is also on the board of Blue Star - which I can't find any other reference to that isn't John Solomon or citing John Solomon's May article. Blue Star's corporate documents and web page make no historical reference to Hunter in any year.
I guess my read on this is - it's ********. Solomon is implying a link because Blue Star is associated with Clinton people.
C) The memo is about characterizations of the Ukrainian interaction with a British tax invasion investigation into Burisma's founder. It's not about Shokin's performance generally.
Honestly, I don't think the article makes any sense in comparison to the documents it cites.