Troubles for Russian oil companies

Thursday's Opec meeting in Vienna is likely to be one of the most closely watched sessions in years.

Oil prices are at their lowest in four years, particularly painful for Russia whose budget is heavily dependent on oil exports.

Moscow is trying to persuade Opec members to cut production in order to increase the prices.

Meanwhile Russian oil companies are facing difficulties because of Western sanctions over Ukraine.

Olga Ivshina reports from western Siberia.