How can anyone legally be worth $200 BILLION !
Who is so competent to make such estimates? Same sort of "experts" who declared during Litvinenko process that "only russian government have access to polonium" while polonium antistatic alfa-sources was commercially available from US retailers?
BTW: All gifts that was presented to Presidents of Russia become a property of the state (unless it is low value item costing less than 5 minimal wages), and kept in a Kremlin Library. First item that go there was Rolex, presented to president Yeltsin. So, Putin have plenty of expensive watches to wear to official meetings. He can use items that is stored in Diamond Fund for special cases.
Well I think first you need independent courts and then you can decide what holds water.
Formally, russian courts is as independent as US courts are.
And ... Just for example... Can you tell me why the US DOJ and the independent American courts, which were so consistent and irreconcilable in the prosecution of the French company Alstom for the facts of commercial bribery that taken place in the past in third world countries, withdrew all claims within 3 days after the sale of Alstom to a General Electric?