And I think a KGB background doesn't make one greedy. I think arresting Gusinsky was a very crude job. One should expect the reaction that followed and I don't know what the purpose was. Unless it's a part of some bigger plan, the arrest was stupid. On the other hand, Al Capone was put in jail for tax evasion and no one cried wolf over it.
Criminals do that too, hoping to use the result of their PR campaign to get favorable treatment.
The question is how to get them now without breaking laws along the way. I think the US is paying lip service to the need to battle corruption, while supporting, directly or indirectly, people who would keep Russia destabilized. The russians could temporary change the law the way they want, get rid of the mafia and reverse the law back. I can see them doing that for a simple reason To get rid of corruption. And I sure would do the same.