The CEO of Russia’s largest potash producer, London-listed Uralkali, was arrested last week after being invited to a meeting with the Belarusian prime minister, in an escalation of the rift between the Russian miner and its former partner Belaruskali. Media reports said Vladislav Baumgertner was detained for “abuse of power for private gain,” in his role as the chairman of the Supervisory Board of the Belarusian Potash Co, or BPC, a joint export cartel set up by Uralkali and Belaruskali to reach global markets.