Co-owner of Norilsk Nickel metal giant Mikhail Prokhorov (r) demands french authorities to apologise for detaining him at the swank Alpine ski resort of Courchevel in connection with an investigation into a suspected prostitution ring. On the picture: head of Rio Tinto company Lee Clifford (l)and general director of `Norilsk Nikel` Mikhail Prokhorov signing cooperation protocol.