Russia could interrupt its remaining gas deliveries to Europe via Ukraine, Russian-controlled energy giant Gazprom announced on Wednesday. Gazprom warned earlier this week that gas supplies via Ukraine were at risk due to a legal dispute with Ukraine’s state-owned gas company Naftogaz over transit fees. After the alleged “sabotage” of the Nord Stream gas pipelines, Moscow is now threatening to impose sanctions on Naftogaz over the arbitration proceedings.