The Russian rouble has dropped to a new low against the US dollar.

The Russian central bank has announced it is hiking its key interest rate to 17% from 10.5%.

The bank said the move was to try to ease the rouble's recent descent in value. The Russian rouble has dropped to a new low against the US dollar, as falling oil prices and Western sanctions continue to weigh on the country's economy. 

It snapped back to 60 roubles per dollar from a low of 67 earlier. The 60 mark is considered a "psychological barrier" for Russia's national currency, says the BBC's Moscow correspondent, Steve Rosenberg.

LAST UPDATED AT 16 DEC 2014, 01:04*

CHART SHOWS LOCAL TIME

US Dollar v Russian Rouble

Since the start of the year, the rouble has lost more than 45% of its value against the dollar. Russia's central bank has tried unsuccessfully to stabilise the currency, buying roubles in the markets.

'Depreciation risks'

It has spent more than $70bn (£44.7bn) supporting the rouble since the start of the year.

"This decision is aimed at limiting substantially increased rouble depreciation risks and inflation risks," the central bank said in a statement. The decision is effective from Tuesday. 

The leap in rate follows an increase to the prior rate of 10.5% on 11 December and an increase of 1.5% to 9.5% in October. The World Bank warned the Russian economy would shrink by at least 0.7% in 2015 if oil prices do not recover. Raising interest rates has its own risks, as more expensive borrowing can itself slow growth. But it may also stem the tide of money leaving the country. 

Oil prices slumped to lows not seen for five-and-a-half years. US benchmark crude West Texas Intermediate traded at $55.91 per barrel, while North Sea Brent crude traded near $60 per barrel. Both markets have fallen by almost half since June.

http://www.bbc.co.uk/news/business-30490082#story_continues_2

http://www.bbc.co.uk/news/business-30431330