People walk near a Christmas tree in central Moscow on December 26, 2008. Russian ruble dropped to a three-year low against the dollar on Friday, after the central bank allowed the currency to weaken slightly in the 11th such devaluation over the past two months. Getty Images logo Getty Images 11 months ago

People walk near a Christmas tree in central Moscow on December 26, 2008. Russian ruble dropped to a three-year low against the dollar on Friday, after the central bank allowed the currency to weaken slightly in the 11th such devaluation over the past two months.