Russia has blocked the delivery of coal and gas to Ukraine
Russian Customs will not allow the transit of coal to Ukraine, for consumers of energy or for cooking. Russian Energy Minister Alexander Novak has suggested previously that the cancelling of deliveries of coal may be one of the responses against Ukraine after the blackout in the Crimea which since in the wee hours of Sunday, the peninsula has been completely without power due to the sabotage of the power lines in the south of Ukraine.
Gas supply from Russia also cuts off because Ukraine already get all prepaid product.