By Nina Chestney LONDON (Reuters) – The European Commission will propose to EU nations on Tuesday sweeping new sanctions against Russia, including banning imports of coal, an EU source told Reuters. This comes at a time of uncertainty about future gas deliveries from Russia to the European Union later this month after the Kremlin’s demand that buyers start paying Russian gas giant Gazprom in roubles. Several EU countries are heavily reliant on Russian coal imports, as well as gas, and have increased coal imports from Russia in recent months due to the spiralling cost of gas. HOW MUCH COAL DOES…

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