Roman Abramovic (jewish)
Boris Berezousky (jewish)
Vladimir Gusinsky (jewish)
Mikhail Khodrokorsky (jewish)
Vladimir Potani (seemingly not)
ALexander Smolensky (jewish)
Vladimir Vinogradov (unknown)
All the jewish ones are dual citizens
5/7
Roman Abramovic (jewish)
Boris Berezousky (jewish)
Vladimir Gusinsky (jewish)
Mikhail Khodrokorsky (jewish)
Vladimir Potani (seemingly not)
ALexander Smolensky (jewish)
Vladimir Vinogradov (unknown)
All the jewish ones are dual citizens
5/7