"It's extremely expensive, extremely painful but what Putin wants instead is for us to say, okay, you can have Ukraine, we're going to end our sanctions." Sanctions will have an effect on Putin eventually but only if we are consistent, says Bill Browder.

"We've seen quite significant pressure on the Russian economy." After Putin says the economic sanctions put in place by the West are 'not impacting' Russia, #TimesRadio asks Professor Samuel Greene, director of the Russian Institute at King's College Lond...