Many predict a gloves-off battle between investors intent on driving the currency lower to reap profits, and Moscow, which may be forced to make unpleasant choices to keep the ruble from falling.

• 许多人预计投资者和俄罗斯之间的战斗可能会更加白热化。投资者希望推低卢布从中获利，而莫斯科可能为了阻止卢布继续下跌而被迫做出不受欢迎的选择。