eswar prasad, this extraordinary move, middle of the night, what were they trying...hat was the central bank trying to do? >> i think they were trying to signal, but i think it's come across as a degree of desperation. the objective of raising interest rates is to try to keep russian money in and try to bring investors from abroad attracted by higher interest rates, the problem is the economy is tightning, and with oil at less than $50 a barrel, it will be very difficult to make the economic numbers add up. >> brown: and the currency is going down because all that money is flowing out. >> that's right. russians are taking money out and foreign investors are also taking money out. the objective of raising interest rates is to try and stem the panic. but with about one quarter of the economy's gdp tied up in oil and natural gas and half of the budget accounted for by the energy sector, the number don't add up for russia. >> brown: angela stent, when you look at those causes, oil prices and the sanction, how vulnerable is russia turning out to be? >> i think russia is qu