Whose 6 billion dollars?

Nobody knows where Rosneft got the money to buy YUNG, which was taken away from YUKOS. It looks like a search in a "raspberry": thieves throw money on the floor and do not admit whose they are. After Vnesheconombank, which was suspected of providing Rosneft with the missing $6 billion, China categorically denied its involvement in the loan. This was officially stated by a representative of the Chinese Foreign Ministry. It seems like a simple business - giving someone a loan - but no one wants to be involved in such a “business”.