GAZPROM VS UKRAINE: DEBT $3.508 B

OAO Gazprom says Ukraine's debt for Russian natural gas supplies amounts to $3.508 billion, including unpaid deliveries for March and April.

Gazprom will be delivering "strictly prepaid amounts of gas to Ukraine, starting from June."

Alexey Miller, chairman of Gazprom's management committee, met on May 16 in Amsterdam with Andrey Kobolev, chief executive officer of Naftogaz of Ukraine, to discuss the issue.