I don’t think career politicians necessarily make better cabinet members than businessmen. The reverse is likely closer to the truth.
As far as the Russia issue, it is a contrived issue by the President-elect’s political opponents. It has no merit. As an aside, Russia behaved better, and acted in a more morally justified position, in both Ukraine and Syria compared to the Obama Administration’s activities and policies regarding the affairs in those two countries. (Again, in *comparison*.)