主播大秀

Moscow shares have slumped by over 10% today and the rouble has fallen to record lows as the crisis in Ukraine builds. We have analysis from Moscow, we're on the ground in Crimea and Charles Kupchan from the Council On Foreign Relations gives us an insight into the economic weapons that could be used by the US against Russia. And Lucy Kellaway tells us why you should use the stairs in your office rather than wait for the lift.