Russia on Monday became the first G8 country since the start of the financial crisis to have its credit rating downgraded after Standard and Poor’s took fright at the recent exodus from the rouble and sharp drop in oil prices.

S&P said it had lowered Russia's foreign currency credit rating by one notch from BBB+ to BBB because of the “rapid depletion” of the country’s foreign exchange reserves and the “difficulty of meeting the country’s external financing needs”. It said the outlook for the rating was negative.