MOSCOW (Reuters) - Russia's Gazprom demanded a $1.66 billion (986 million pounds) pre-payment from Ukraine for June gas deliveries on Tuesday, saying the neighbouring country had only half its requirements in storage to ensure a trouble-free winter.
Citing a preliminary bill, Moscow pressed ahead with its demand that Ukraine pay for June deliveries early next month, heightening a dispute over price that is pushing the two countries closer to another gas war that could cut supplies.
