Ukraine Says EU Should Help Pay to Store Natural Gas if It Wants to Prepare for …

BRUSSELS—The European Union should share the cost of filling Ukraine’s natural-gas storage if it wants to prepare for worst-case scenarios next winter, the country’s energy minister said in an interview, highlighting a potential clash in coming negotiations between the EU, Kyiv and Moscow.

An EU-mediated deal that helped maintain gas supplies to Ukraine and the rest of Europe during the winter expires at the end of March. The comments by Volodymyr Demchyshyn, a former investment banker who took office in December,…