Boris Nemtsov is one of the leaders of the liberal opposition in Russia and a former deputy prime minister. He has just spent two weeks in a Russian jail after taking part in a political protest.
He told HARDtalk's Stephen Sackur that the West should consider sanctions against Russia over its human rights record.
You can watch the full interview on Monday 7th February 2011 on BBC World News at 1530 and 2130 GMT and on BBC News Channel at 2330 GMT, as well as on Tuesday 8th February 2011 at 0430 and 0930 GMT on BBC World News and at 0430 GMT on BBC News Channel.
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