Russia 'has more than just oil to rely on', says ex-BP boss

The rouble suffered its biggest one-day decline since 1998 as oil prices continued to fall on Monday, escalating fears about the Russian economy.

The currency slid almost 9% against the dollar before rallying after suspected central bank intervention.

Russia is heavily dependent on revenues from oil exports, making its currency vulnerable to falling prices.

The BBC's Robert Peston asked former BP boss, Lord Browne, how worried we should be about the country's situation.