richard was slightly talking about is will russia's economic woes drag down the global economy? i want to talk about that with cnn's emerging markets editor, john defterios in abu dhabi. we're talking $50, $60 a barrel, a far cry from where it was this summer at $100 a barrel. how does that impact russia in terms of lost oil revenues? >> reporter: well, zain, the harsh reality is they've been overly dependent on it. despite putin's prom cla nations he would diversify the economy. if it stays between 50 and $60 a barrel it will cost russia anywhere from 180 billion to $200 billion a year, three-quarters of their exports earnings comes from oil and gas that makes up half of overall revenue. so a lot of pressure. what does that mean in terms of