Russian authorities say two explosions on a pipeline which cut supplies to neighbouring Georgia were caused by bombs. Two sections of the pipeline, which runs through Russia’s North Ossettia region to the Georgian capital, Tblisi, were badly damaged in the blasts. The incident could not have come at a worse time for Georgia. Both it and neighbour Armenia are facing an energy crisis as unusually cold weather grips the region. Georgia is entirely dependent on Russia for its gas supplies. Russian officials said repairs could take two to three days to complete.