Russian entrepreneur Vladimir Yakunin - who has been sanctioned by the U.S. over his close ties with President Vladimir Putin - dismissed his penalties as inappropriate and a "quarrel in the kitchen."
Yakunin, who is chairman of the state-owned Russian Railways, said the fact that he is on Washington's sanctions list made him feel "strange."
"I don't see any reason (for it)," he told CNBC at the St. Petersburg International Economic Forum (SPIEF).
He said the only reason given for the sanctions was because he was a friend of President Putin. "This is not diplomatic... It seems like a quarrel in the kitchen."