This is either a new level of stupidity on the part of the Trump Administration or an intentional scheme to put someone who knows little about Russia in charge of the embassy there so that he might not notice whatever else is going on with that country. It could be both.
Actually, the second option is also pretty stupid too. Huntsman is not an idiot. He will notice if stuff is going on. He is also not a Trump loyalist, and he probably has political ambition that would be served by betraying the Trump regime if the right moment arises.