MOSCOW: The Russian rouble has hit another historic low against the dollar as oil prices continue to slide due to a surplus of crude oil on world markets. The rouble traded above 85 to dollar for the first time in Moscow early Thursday afternoon, a fall of more than three per cent, which beat the previous low of 82.4 to the dollar set in trading Wednesday evening. Thursday’s slip means rouble is at its lowest level since the currency was redenominated in 1998, during Russia’s worst post-Soviet economic crisis. President Vladimir Putin’s Spokesman Dmitry Peskov, however, said situation was not critical.