MOSCOW (Reuters) - Tension between Russia and Belarus rose on Thursday as Moscow warned oil supply cuts to its energy-poor neighbour could last for months, and Minsk threatened to open a criminal case against a Russian tycoon with Kremlin ties.
The close but often rocky relationship between the ex-Soviet states hit a major bump this week when Vladislav Baumgertner, the chief executive of potash company Uralkali, was arrested in Minsk.
